Aman 13 years AGO

Dear admin and friends,

The answer given for yesterday puzzle about 'Final match' is not correct.

It is already given that

There winning order is A>B>C>D>E>F>G>H.

In that case EFGH are in lower rank in both the pools in any possible arrangement.

Only ABCD can reach in semi final with all possible combinations .

As it is given that C has not reached in final,
Possible combinations for final are
AB
AD
BD.

Out of these three combinations, we ae interested in one combination i.e. AB.

Hence probability of final between A and b is 1/3.


I think administrator has forgotten the given condition

There winning order is A>B>C>D>E>F>G>H.


Please check and give your comments please.

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vivek singh 13 years AGO

i cracked my first campus TCS in November 2011...i convey my heartly thanks to all the members of m4maths community who directly or indirectly helped me to get through TCS......special thanks to admin for creating such a superb community

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Sushma 13 years AGO

In today's puzzle,
it is given that
There are 8 teams A, B, C, D, E, F, G, H. There winning order is A>B>C>D>E>F>G>H.

Can u make it clear whether this order is final or after knock out round ?

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ghanta komali 13 years AGO

why my solving time always shows hh:mm:ss:11:35:25
then how i get the points...........??

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Sushma 13 years AGO

@ Sunil,

The probability that a person A who is now 25 years old will not live for another 30 years is 1 - 2/5 = 3/5
The probability that the person B who is now 45 years old will not live for another 30 year is
1 - 7/16 = 9/16
The probability that none of these persons will be alive 30 years = (3/5)*(9/16) = 27/80
The probability that at least one of these persons will be alive 30 years = 1 - 27/80 = 53/80

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Vignesh 13 years AGO

@ All,
Please submit your puzzles in the placement puzzles section. Not in discussion board section.

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Dolly 13 years AGO

@ Pooja,

If you mean that watch is showing correct time at 8 AM,
and
you want correct time when watch shows 8 PM, then
after x correct hrs, displayed time is x-x/120 hrs

hence
x-x/120 =12
119x = 12*120
x= 12*120/119 = 12.1008 hrs or 12 hrs 6 mins approx

so correct time is 8:06 PM approx

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mangaldeep 13 years AGO

placement puzzle
Q id=#M40007848
Puzzle Status: Solved By »» Dolly
police Found G at the Murder site according to dolly g is the Judge
how??
it's wrong answer please check it

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Inder 13 years AGO

@ Dolly,

Very sorry for your case.

This site is not meant for intelligent persons like you.

Just interpret the puzzle as a layman and answer as per options for better marks.

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Dolly 13 years AGO

@ Administrator,
Thanks for your response.

But this statement is not correct.

'But the participants who opted option 2 are also correct. '

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Vignesh 13 years AGO

@ Admin,

Thanks to make such things. It is nice to see getting response from you during the conversations between myself and dolly. I think now dolly will clear.

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Vignesh 13 years AGO

@ Dolly

Hmm:- I feel sorry for not getting respond from Admin to you:-(
But we hope that those kind of mistakes will be avoided in future:-!!

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Dolly 13 years AGO

@ Vignesh,

But there was one option which justified the answer.

That sum can not be calculated
as
there are infinite numbers possible for that statement.

I would also be responding like you if my answer would have been accepted right.

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Vignesh 13 years AGO

@ Dolly,

Yesterday I also getting same doubt like you. But, I guess that yesterday puzzle was in without repetition and limit was 5 digits. So, according to that only i solved. But all know that the puzzle was not in clear.Let We hope that Admin will respond regarding to that puzzle as soon.??

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Dolly 13 years AGO

@ Vignesh,

Is there any use of your response when administrator is not responding?

Even You are not responding to my query about your justification for the answer submitted by you as per that statement..

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Vignesh 13 years AGO

@ Dolly,
Yes, i know that you pointed out that mistake yesterday. But, there is no use for us by submit our queries in Placement Puzzle section. Because, after submitting query in that section also, Admin is not responding for that yet. So only i said.

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Dolly 13 years AGO

@ Vignesh,

Can you justify your answer according to the statement published on 21/2/12 ?

Everyone getting marks for his wrong answer will try to justify the approach of administrator ..

Congrats for getting marks for wrong answer.

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Vignesh 13 years AGO

@Admin,
Still there is lot of puzzles in queue which not verified by you, after submit correct solution by us. Please concern that all. It is useful for us.

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Dolly 13 years AGO

Dear Vignesh,

I have put the query in placement puzzle section because I did not get any response from Administrator for yesterday puzzle.

I pointed out that mistake yesterday for clarification.

Please check.

It is better if you take up my case with administrator.

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Vignesh 13 years AGO

@Dolly,
Please do not submit your queries in Placement Puzzles Section. It is not fair.

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Dolly 13 years AGO

Pls respond with unbiased approach.

Pls accept mistake if statement printed is wrong instead of punishing those who gave correct answer as per given statement.

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Dolly 13 years AGO

Dear Admin,

It is not fair fair on your part to change language of qn on next day .
According to statement
Sum of all the numbers formed by the integers 2,3,4,5,8 is ....

The sum can not be calculated as there are infinite numbers that can be made with these integers.

On next day , you changed the statement to help some members with wrong answers with new statement

Sum of all the 5 digit numbers formed by the integers 2,3,4,5,8 is
(Repetition is not allowed)


Pls respond with inbiased approach.

Pls accept mistake if statement printed is wrong instead of punishing those who gave correct answer as per given statement.

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HARMEET KAUR 13 years AGO

I think today's qn should be read as
Sum of all the five digit numbers formed by the integers 2,3,4,5,8 without repetition of digits.

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DIPIN 13 years AGO

Qn of today's (21/2/12) puzzle is not clear.

Pls check.

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Dolly 13 years AGO

In today's puzzle

Sum of all the numbers formed by the integers 2,3,4,5,8 is ....

It is not given whether digits can be repeated.

whether there is any limit on number of digits in a number formed by these integers.

Please clarify.

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Karan 13 years AGO

If a rainy day occurs on every 10th day and each rainy day accounts for half rainbow then in 20 days what is the percentage of days when rainbow doesn't takes place.

on 90% days, the rainbow does not take place.

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Satya Prakash Yadav 13 years AGO

If a rainy day occurs on every 10th day and each rainy day accounts for half rainbow then in 20 days what is the percentage of days when rainbow doesn't takes place.

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niru 13 years AGO

my solution was the best solution overall but u didnt show me the puzzle i am talking about is of date 17 2 2012

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Dolly 13 years AGO

the probability that at least one of these persons will be alive 30 years = 1- (3/5 *9/16) =1-27/80 = 53/80

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Pratik Goyal 13 years AGO

the time of puzzle of the day ,MUST BE CHANGE because i am a student and i am not able o solve it at 11:00....as iam in college that time ......so plz plz do something for that plz

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niru 13 years AGO

the time of puzzle of the day ,MUST BE CHANGE because i am a student and i am not able o solve it at 11:00....as iam in college that time ......so plz plz do something for that plz

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Anita 13 years AGO

@ Vignesh,

It is nice that you got the point.

Hope you will take it in right spirit.

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Sukh 13 years AGO

@ Vignesh,

Such discussions add value to site.

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Vignesh 13 years AGO

@ Admin & all

Sorry. Now i am clear. I submit my answer wrongly on 15.02.2012. So only they deduct -1 points.
Sorry Admin.
Thanks for Anita & Shiv for point out my mistake.

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Sukh 13 years AGO

@ yadeesh,

check solution given by Aman

Sum of x terms = (x/2)*(2*30 +(x-1)*1)
when x=129,
sum = 129*188/2 =129*94=12126
for x=130
sum = 65*189=12285

so min value of x should be 130 so that
30+31+32+33+................ upto x numbers > 12250


so answer is 130.

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Shiv 13 years AGO

@ Yadeesh,

For yesterday puzzle,

30+31+32+33+................ upto x numbers > 12250
then minimum value of x will be


correct answer is 130 .. option 5

and
not
128 .. option 4.

Pls check.

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Shiv 13 years AGO

@ Vignesh,

Anita is right.

Answer for that puzzle is 3 which is option 4 and not option 5..

Pls check again..

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Vignesh 13 years AGO

@ Yadeesh

I'm not ask my points back for yesterday puzzle. I'm asking for day before yesterday(15.02.2012) puzzle. On that day answer will be Option 5)4 which was be accepted by admin. Me too selected option 5)4 only. But my marks deducted by -1. That why i am asking.

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YadeeshKumar 13 years AGO

for yesterday puzzle(16.2.12), the ans was opt 4 128.but u have mentioned opt 5. pls check it.

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Vignesh 13 years AGO

@Admin,

Yet there is no response from you for my query! Hope that You will respond as soon.

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Vignesh 13 years AGO

@ Anita,

For yesterday puzzle, answer is 4 but not the option 4. Actually the answer 4 was in the option 5 only. plz check it.

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Anita 13 years AGO

@ Vignesg,

Because for yesterday puzzle, answer was option 4 and not option 5.

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Vignesh 13 years AGO

@Admin,

I want my 18(17(puzzle point which i solved in 3:17 minutes) + 1(which u reduced)) points back, instead of -1 :(
Concern me :-(

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Vignesh 13 years AGO

@Admin,
Plz reply that in what basis you reduce my point after i submit correct answer for yesterday's(15-Feb-2012) puzzle???????????

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Vignesh 13 years AGO

@ Admin,
For yesterday(15/02/2012) puzzle, i chose option 5 only. Then, Why u reduce my points(-1)??? plz reply soon as possible.

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Sanjana Patnaik 13 years AGO

Dear Admin
Refer the solved puzzle(#M40000070)

The answer has given as 16 but I found it as 15
Because, there would be four cuts required to get maximum No of pieces of cake. We do not get the maximum pieces when the cutting would be parallel.Therefore, axial cutting is required.
For this the following formula has been used:

For N(max)=(n^3+5n+6)/6
Anticipating other members of this forum can share their views.

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Piyush Agrawal 13 years AGO

how can i change my contact no.

please give me answer as early as possible.....

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~Sandeep~ 13 years AGO

@ ALW
High Income - Public School
Reason:(500*100/700 = 71.4% of High income go to Public School)
Low Income - Govt. School
Reason:(200*100/300 = 66.67% of Low income go to Govt. School)

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Ashu 13 years AGO

@ Admin,

Pls check.

My marks are still shown as -1 whereas I have answered option 10 which you have accepted as correct now.

Hope this will be rectified soon.

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Bankim 13 years AGO

It will be appreciated if the clarification is given at the earliest so that fence sitters can also answer the qn.

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Bankim 13 years AGO

Well predicted by Mr. Pargat that this mistake will be accepted ( and everyone will get marks).

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Divya 13 years AGO

K=5.5 is not minimum value satisfying given conditions.
Many values less than that satisfy given conditions.
even k 0.5 satisfies which is not there in options.

so none of these.

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Ashu 13 years AGO

The mistake in qn was informed to administrator in time but there was no response from admin.

so qn was answered according to given statements.

How min k=5.5 can satisfy given conditions ?

as k=1 also satisfies all conditions when A= 9.

pls check.

so
none of these should be correct for yesterday puzzle.

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Suman 13 years AGO

@ Admin,

Pls do not deduct our marks.

we have taken pain to correct the typing mistake on your part and given answer as per your interpretation of qn.

pls take care.

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Shikha 13 years AGO

5628
280
97405
5234
...............
108547

a e g h i m r s t w
0 4 9 6 2 3 7 8 5 1

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visweshwaran 13 years AGO

T H I S
I S A
G R E A T
T I M E
========+
W A S T E R
How to solve this

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Manav 13 years AGO

I think answer for yesterday puzzle should be

none of these..option 10.

pls check.

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Tijo Jose 13 years AGO

For the puzzle dated 09-Feb-2012 (title: minimum), the question is

k+x = 10,
x+y+z >= 8
if y >= 3.5 and 0 <= z<= 4.2
all the 4 are positive real numbers
then minimum value of k will be

1) 4.8
2) 5.3
3) 5.5
4) 6.7
5) 7.7
6) 9.7
7) 8.8
8) 3.5
9) 4.2
10) none of these

The answer is given as option 3.

Let k = 0.5, x = 9.5, y = 3.5, z = 0
k + x = 10
x + y + z = 13 >= 8
This assignment does not violate any of the given conditions... The value of k is smaller than the solution given in option 3. The answer should be option 10, none of these!!!

In fact, if the "positive real numbers" include 0, then k = 0 is the minimum possible value of k.

Even the reason given by m4maths is invalid.
according to the given conditions y + z + 2 >= k
so, 3.5 + 0 + 2 >= k
or 5.5 >= k
since k is positive, 5.5 >= k >= 0
minimum value is 0 and maximum value is 5.5

Admin, please look into it...

It is only fair, that the question be not judged, as there are people who did the question, guessing the "greater than or equal to" to be a "less than or equal to", and there are people who did it the way it was...

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~Sandeep~ 13 years AGO

Agree with Pargat.... Admin Sir hope you are listening to well wishers of m4maths :)

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~Sandeep~ 13 years AGO

@Mihir:
I believe "none of these" should not be misused in almost every 2nd puzzle to cover up the printing mistakes.That when you are giving 10 options. The quality of questions needs to improve.

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~Sandeep~ 13 years AGO

So many problems to users, unable to post a complete message :(
Today's question is bit ambiguous. The equation x+y+z GTE 8 should be x+y+z LTE 8

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~Sandeep~ 13 years AGO

Today's question is bit ambiguous. The equation x+y+z >= 8 should be x+y+z

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~Sandeep~ 13 years AGO

Today's question is bit ambiguous.
The equation x+y+z >= 8 should be x+y+z

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aruna 13 years AGO

@krithika
the sum is 800 and the rate of interest is 4.67%
A1=1008 T1=2 A2=1164 T2=7/2
P=A1*T2-A2*T1/T2-T1=1008*7/2-1164*2/7/2-2=800
R=A1-A2/A1T2-A2T1*100=56/1200*100=4.67%

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jabir.kp 13 years AGO

knowledgable website

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Bankim 13 years AGO

Is anyone listening ??

Any puzzle today ????

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Dimple 13 years AGO

Where is the puzzle of the day ?

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Premkumar 13 years AGO

What happened Admin? No puzzle till now!!!

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susmit 13 years AGO

3/02/2012 puzzle is not there 3 mins are gone

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Garima 13 years AGO

A man driving a car managed to cover a lap with an average speed of 300mph. He managed to cover first 2/5th of the lap with an average speed of 600mph and the second 2/5th of the lap with a speed of 400mph. Then, what is the average speed required to cover 1/5th of the lap.

If lap length is 6000 miles, he took total 20 hrs.
For first 2400 miles (2/5 lap), he took 4 hrs
For next 2400 miles (2/5 lap), he took 6hrs

For balance 100 miles (1/5 part) , he took 10 hrs.

so speed in last 1/5 part = 1200/10 = 120 mph

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Garima 13 years AGO

@ Aruna,
I think there is so much confusion due to typing mistake on my part.

what is the sum of all the numbers less than 100 that can be written as the sum of 9 consecutive positive integers?

such numbers are
45,54,63,72,81.90,99
sum = 45+54+63+72+81+90+99
= 9(5+6+7+8+9+10+11)=9*56 = 494

it should be
9*56 = 504

so answer will be 504.

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Dolly 13 years AGO

ABC is three digit number.The sum of its digits is 9.If each BA and BC are two digit numbers such that BA=BC-3.How many values C can take?

hence A=C-3
A can not be zero.
A can have values from 1 to 6 so that C have values from 4-9.
6 combinations for AC are possible.
B can have any of 10 values from 0-9.

so C can take 6 values.

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aruna 13 years AGO

ABC is three digit number.The sum of its digits is 9.If each BA and BC are two digit numbers such that BA=BC-3.How many values C can take?

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aruna 13 years AGO

thanks to all

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~Sandeep~ 13 years AGO

@Aruna : As everyone is pointing out answer is 504
Reason:
There are 7 Set of such number are:
1,2,3,4,5,6,7,8,9 = Sum is 45
2,3,4,5,6,7,8,9,10 = Sum is 54
3,4,5,6,7,8,9,10,11 = Sum is 63
4,5,6,7,8,9,10,11,12 = Sum is 72
5,6,7,8,9,10,11,12,13 = Sum is 81
6,7,8,9,10,11,12,13,14 = Sum is 90
7,8,9,10,11,12,13,14,15 = Sum is 99

Sum of 45+54+63+72+81+90+99 = 504

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Vignesh 13 years AGO

@Aruna,
Answer is 504.
Sum of 9 consecutive positive numbers

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Vignesh 13 years AGO

@ Admin,
why my comments are not visible fully.
I explain my answer briefly for Aruna. But here it visible only one line!! Why?????

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Vignesh 13 years AGO

@Aruna, Answer may be 504.Sum of 9, consecutive positive numbers

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Vignesh 13 years AGO

@Aruna
Answer may be 504.

Sum of 9, consecutive positive numbers

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Vignesh 13 years AGO

@Aruna
what is the sum of all the numbers less than 100 that can be written as the sum of 9 consecutive positive integers?
Answer may be 504.

Sum of 9, consecutive positive numbers

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aruna 13 years AGO

but the options are
1.612
2.630
3.702
4.504

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Garima 13 years AGO

what is the sum of all the numbers less than 100 that can be written as the sum of 9 consecutive positive integers?

such numbers are
45,54,63,72,81.90,99
sum = 45+54+63+72+81+90+99
= 9(5+6+7+8+9+10+11)=9*56 = 494

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aruna 13 years AGO

please solve it urgently

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aruna 13 years AGO

what is the sum of all the numbers less than 100 that can be written as the sum of 9 consecutive positive integers?

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VikrantMundhekar 13 years AGO

Dear Admin & all ,
Actually my total score of last week was 110.
As i registered my account on last Monday.
Tolal score from 23rd Jan to 27th Jan was 110.

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VikrantMundhekar 13 years AGO

Dear Admin,
My total points are 110. As I am new to this site please guide me, whether I am eligible to get prize?
If yes,what is the further procedure & if no, then why?....

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Satya Prakash Yadav 13 years AGO

find out the wrong number in this series.
1,11,48,347,3121,3431

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Rakesh Kumar Kohli 13 years AGO

Hi Seenuvasn your solution to your problem here

Problem:
The probability that a person A who is now 25 years old, lives for another 30 years is 2/5; and the probability that the person B who is now 45 years old lives for another 30 year is 7/16. Find the probability that at least one of these persons will be alive 30 years.

Solution:
The probability that a person A who is now 25 years old will not live for another 30 years is 1 - 2/5 = 3/5
The probability that the person B who is now 45 years old will not live for another 30 year is
1 - 7/16 = 9/16
The probability that none of these persons will be alive 30 years = (3/5)*(9/16) = 27/80
The probability that at least one of these persons will be alive 30 years = 1 - 27/80 = 53/80

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Rakesh Kumar Kohli 13 years AGO

Thanks BASHA for correction

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Sheetal 13 years AGO

3. The probability that a person A who is now 25 years old, lives for another 30 years is 2/5; and the probability that the person B who is now 45 years old lives for another 30 year is 7/16. Find the probability that at least one of these persons will be alive 30 years.


In this case,
probability that a person A who is now 25 years old, does not live for another 30 years is 1-2/5= 3/5

Prob that the person B who is now 45 years old does not live for another 30 year is 1- 7/16 = 9/16.
probability that no person lives for another 30 years is 3/5 * 9/16 = 27/80
probability that at least person lives for another 30 years is 1- 27/80 = 53/80

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H.seenuvasan 13 years AGO

please solve the problem

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H.seenuvasan 13 years AGO

3. The probability that a person A who is now 25 years old, lives for another 30 years is 2/5; and the probability that the person B who is now 45 years old lives for another 30 year is 7/16. Find the probability that at least one of these persons will be alive 30 years.

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Sulekha 13 years AGO

Dear Administrator,

Thanks a lot for 'quick' response to the doubt on puzzle dtd 25/1/12.

quote
In today's puzzle

x + y + z = 5,
x is not equal to y, y is not equal to z and z is not equal to x,
all x, y and z are integers. Possible number of outcomes are

It is only mentioned that x,y,z are integers.

It is not stated that x,y,z are positive integere.

I have solved the qn assuming that both positive and negative integers are permitted.

I have solved according to that.

If there is any typing mistake, please clarify now so that I can correct my answer according to that.


Waiting for early response from administrator
unquote

Hope we shall get early response next time.

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~Sandeep~ 13 years AGO

Thanks a ton :)

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Rakesh Kumar Kohli 13 years AGO

Dear Admin:
In yeasterday's (25 Jan 2012) puzzle, no where it was mentioned that only positive integers are to be considered. One can take even negative integers as values for x, y and z. So this it can have infiite solutions.

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~Sandeep~ 13 years AGO

I guess we need a new a major change here before this useful site starts loosing users. Reason being:
- The quality/clarity of questions has gone down drastically in last few months.
- The response from Admin is too slow. It takes ages to get a response from Admin. Ideally it is expected that we get a response within 1-2 hours, but the response comes after 2-3 days or after 16-18 hours.

Have been with this site for more than 2.5 years but now I feel sad :(.

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susmit 13 years AGO

why you have considered positive integers only ?

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Dolly 13 years AGO

Sulekha has already pointed out this confusion but administrator has not take pain to clarify that .

So there is confusion in the qn and accepted answer.

Administrator should regularly check and make it clear to maintain dignity of site.

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