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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