~Sandeep~ 13 years AGO

Its time you should improve the quality of questions and response given to the users, I am seeing its going down hill.

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~Sandeep~ 13 years AGO

Dear Admin:
For today's puzzle, its no where mentioned that only positive integers are to be considered.
Refer following page for definition of integers:
http://www.mathgoodies.com/lessons/vol5/intro_integers.html
For x + y + z = 5.
Answer is infinite. Examples are:
x=1,y=-2, z=6 and x+y+z=5
x=1,y=-1,z=5 and x+y+z=5
x=1,y=-3, z=7 and x+y+z=5
x=1,y=-4,z=8 and x+y+z=5
x=2,y=-2, z=5 and x+y+z=5
x=3,y=-3,z=5 and x+y+z=5
x=0,y=1, z=4 and x+y+z=5
x=0,y=2,z=3 and x+y+z=5
x=4,y=-4, z=5 and x+y+z=5
x=6,y=-8,z=3 and x+y+z=5
x=6,y=-9, z=8 and x+y+z=5
x=6,y=-10,z=9 and x+y+z=5
x=6,y=-11, z=10 and x+y+z=5
x=6,y=-12,z=11 and x+y+z=5
x=6,y=-13, z=12 and x+y+z=5
x=1,y=-14,z=13 and x+y+z=5
x=1,y=-15, z=14 and x+y+z=5
x=1,y=-16,z=15 and x+y+z=5


Let me know if you want more such examples.
Sandeep.

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Vadivelan M 13 years AGO

Hi Admin,

Regarding puzzle for 25th Jan 2012:

Integers means both positive and negative numbers with 0. In the question nowhere mentioned its positive numbers alone. So 10)none of these is correct option. Please check.

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pavan kumar 13 years AGO

if you have any question papers with apptitude plz snd 2 my mail pavankumar.ratala@gmail.com

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Sulekha 13 years AGO

For each hour an watch is going slow by 30 seconds. Now time is 8a.m.What will be the actual time at 8p.m.

Here watch is going slow.

when it is showing, 8 PM, actual time should be more than that.

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Sulekha 13 years AGO

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

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Piyush Agrawal 13 years AGO

please help me Admin,

My contact number is changed.
So, How can i change it in my profile????
reply me as soon as possible....

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K BASHA 13 years AGO

7:56 is correct or not

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K BASHA 13 years AGO

For each hour an watch is going slow by 30 seconds. Now time is 8a.m.What will be the actual time at 8p.m.

b/w 8 am to 8 pm 12 hrs

in 12 hrs the watch will lose 360 sec ie 6 min

so the actual time is 7:56 pm

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kuzhalini 13 years AGO

pl sent me tcs new pattern to my id

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Piyush Agrawal 13 years AGO

how can i change my contact number?????

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swathy 13 years AGO

For each hour an watch is going slow by 30 seconds. Now time is 8a.m.What will be the actual time at 8p.m.

any one solve this question plz...

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Dolly 13 years AGO

Whether correct ans is 1/3 or 1/4 ?

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Dolly 13 years AGO

@Vignesh,

It is nice that you realised your mistake.

I think everyone will understand that answer now.

But what is the right answer for that puzzle ?

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Vignesh 13 years AGO

Oh! Yes! I accept my mistake!
I thought all could understand that.
But i fail to explain that in clear, i think..

Thanks Mr.Dolly to point out my mistake clearly which i did :-)
Now only I understand my mistake!!

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Dolly 13 years AGO

@ Mr. Vignesh,

If you would have clearly mentioned finite fraction value and infinite fraction value, no body will have any doubt .
But you have stated that
"Other than 1/4, all are fraction values."

no body will accept that easily as 1/4 is also a fraction.

There is no need to make it prestige issue and it better to accept that mistake gracefully.

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Vignesh 13 years AGO

To Mr.Bankim,

1/4 = 0.25 (finite fraction value)
1/3 = 0.333333333333333333333333... (infinite f.v)
1/6 = 0.166666666666666666666667... (infinite f.v)
1/18= 0.05555555555555555555556.... (infinite f.v)

In the above cases, only 1/4 have rounded fraction value.
Other than 1/4, all are infinite fraction values.(Not exact values)
By, the above basis only i justify that 1/4 is ODD one.. I hope now Mr.Bankim n all get my point????????

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Karan 13 years AGO

In case of puzzle

There is a 4 storied building. In every floor 4 sets are available so total 16 room sets are available. I have to knock 3 out of these 16 for finding the room of my friend. What will be the probability to get the friends room?


I think probability should be
1/16 +1/15 +1/14 which is none of the given options.

as prob of getting right room in first knock = 1/16
prob of getting right room in 2nd knock = 1/15
prob of getting right room in 3rd knock = 1/14

Pls correct me if I am wrong.

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Bankim 13 years AGO

@ Mr. Vignesh,

I think it was not clear from your statement what you actually mean with 'fraction'.

Now you have explained what was actually in your mind and hope that everyone including Sukham will accept this explanation.

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Bankim 13 years AGO

Mr. Vignesh,

Hope you got the point .

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Bankim 13 years AGO

@ Mr. Vignesh,

Mr. Brown said, We all r wearing Ties of color which do not match with our name. One person says Yes u r absolutely right. who was in green tie.

So it is clear that Mr. Brown is not wearing Green tie.

So Mr. Brown is wearing Yellow tie only.

If you are giving two options for each answer, that is not the puzzle for the level of m4maths.
Any child can give these options without any other statement when he knows that they wearing Ties of color which do not match with their names.

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Vignesh 13 years AGO

Hi Mr.Sukham,
Don't know why you didn't accept my answer in the puzzle (#M40007630).
In that puzzle, they wearing Ties of color which do not match with their names. That means, each having two possibilities to wear different colour tie which not suits their name.. So only i said Mr.Brown wears Yellow (or Green) tie
Mr.Green wears Brown (or yellow) tie
Mr.Yellow wears Green (or brown) tie.

I think that i may correct.
Now You clear Mr.Sukham?????!!!!!!

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Vignesh 13 years AGO

Hi Mr.Sukham,
I mean that 1/4 have finite decimal fraction expansion. And other values have infinite decimal fraction expansion in that puzzle. So, i judge 1/4 as a Odd one.. Hope, now you clear????!!!

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Sukham 13 years AGO

@ Admin,

Pls check this one

a)1/4
Other than 1/4, all are fraction values.
This answer given by VIGNESH is correct.

1/3
In other cases, denominator is even.
This answer is given by PARGAT PAL SINGH and is also correct
1/3 since the denominator is a prime number.
This answer is given by CHETAN ANAND and is also a good justification



You have accepted this one as correct
a)1/4
Other than 1/4, all are fraction values.
This answer given by VIGNESH is correct.

In this question, all terms including 1/4 are fractions.

How this justification can make it (1/4) odd.


Pleeeeeeeeeeease check.

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Sukham 13 years AGO

I think observation made by Animesh and Balakumaran is right.

Mr. Dipin has also made the same observation in the solution provided by him while giving solution for the puzzle.

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Sukham 13 years AGO

Dear Admin,

pls check sol of this puzzle again.

(#M40007630) SELF MATHS PUZZLE self Keep an EYE Keep an eye puzzle
Mr. Yellow, Mr. Brown and Mr. Green. They were wearing Tie of Yellow, Brown and Green Color. Mr. Brown said, We all r wearing Ties of color which do not match with our name. One person says Yes u r absolutely right. who was in green tie? Can U say which person wear the tie of which color?


Answer given by Mr. Vignesh is not correct which you have accepted as correct.

Pls excuse me if I am wrong.

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animesh paul 13 years AGO

dear admin previous in days puzzle we had to choose the incorrect one, there was nothing incorrect. however the question could have been in the format to choose the odd one.
if u cant question in the proper way then pls do not make any stupid questions like that.
and even if u question the wrong way, if is ur duty to clarify the mistake or remove that puzzle or give full credits to those answered your question.

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Balakumaran N.A 13 years AGO

Dear Admin,
The following question was not clear.
choose the incorrect one
Options
1) 7:15:12 AM
2) 7:16:04 AM
3) 7:16:56 AM
4) 7:17:48 AM
5) 7:18:40 AM
6) 7:19:32 AM
7) 7:20:24 AM
8) 7:21:18 AM
9) 7:22:08 AM
10) none of these

Choose the incorrect one: It means, Whether the format of time or what?

It should be, "Choose the incorrect one in among given SEQUENCE" according to your answer...

Otherwise, Option 10 is the Correct answer..Could u please do the favour regarding this?...

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DIPIN 13 years AGO

The sum of 25 consecutive integers (including negative, positive and zero) is divisible by

a. 5
b. 10
c. 25
d. 11


25 consecutive integers (including negative, positive and zero) is divisible by 25 and 5 as
average of numbers is 13th number.

sum = 25* 13th number

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Sidak 13 years AGO

It was told that puzzle of wednesday will be available on Saturday but puzzle is available today.

Pls check and solve.

I was also late..

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Atwal 13 years AGO

As informed by Admin,

'Due to some reason we could not provide any puzzle on Wednesday so this week puzzle will be displayed till Saturday'

What will be the case about Tuesday (17.01.2012) puzzle ? Will it be available on Sunday ?

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Piyush Agrawal 13 years AGO

for 17-01-2012 puzzle is not displayed

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Piyush Agrawal 13 years AGO

I don't know, today's puzzle is not asked.

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Chetan Anand 13 years AGO

It's 11:24am but still no puzzle

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Vignesh 13 years AGO

Hi Admin,

What happened today? There is no puzzle?

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C.T.Narayanan 13 years AGO

NO question for today .. this saturday, there might be a question.

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Gunaseelan 13 years AGO

still didnt get any puzzle today. what hapnd?

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~Sandeep~ 13 years AGO

Dear Admin,
Its a 11:05 and no puzzle has been published yet...wondering whats happening.
Sandeep.

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Balakumaran N.A 13 years AGO

I didnt received today (17.1.2010) puzzle

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animesh paul 13 years AGO

dear admin previously if someone scored 80 in a week he used to get a gift.
but has the rule changed?
now we have to score a minimum of 96 in 5 days to get a gift?

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preethi 13 years AGO

hi sir
I'm not receiving your puzzle on time. please do something

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DIPIN 13 years AGO

Dear Admin,

Thanks for the gift.

I received it today.

Regards,

Dipin

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DIPIN 13 years AGO

after a toast is raised at a party the organizer breaks a glass.if after 8 toasts there are only 6 glasses left,which of following could be the original number of glasses on the table?

30,

as 30-8*3 = 6

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DIPIN 13 years AGO

A man travels from A to B at a speed of x Kmph.he than rests at B for x hours.He then travels from B to C at a speed of 2x Kmph and rests at C for 2x hours.He moves further to D at a speed twice as that between B&C.He thus reaches D in 16 hours.if distances A-b,B-c and C-D are equal to 12 Km, then time for which he rested at B could be :
3 hours

As per given conditions
12/x + x + 12/2x + 2x + 12/4x = 16

solving it, we get
x= 3 hrs

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rahul soni 13 years AGO

A man travels from A to B at a speed of x Kmph.he than rests at B for x hours.He then travels from B to C at a speed of 2x Kmph and rests at C for 2x hours.He moves further to D at a speed twice as that between B&C.He thus reaches D in 16 hours.if distances A-b,B-c and C-D are equal to 12 Km, then time for which he rested at B could be :


4.5 hours, 6 hours, 2 hours, 4hours, 3 hours

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rahul soni 13 years AGO

after a toast is raised at a party the organizer breaks a glass.if after 8 toasts there are only 6 glasses left,which of following could be the original number of glasses on the table?

30, 32, 34, 36

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rahul soni 13 years AGO

dear admin plzz solve this question
Fatah asked jujhar how many students there were in his English class .juhar replied, “3/4 of them are less than 22 years old, 2/3 are less than 21 years old, 12 are not yet 20 years old, and there are twice as many between the ages of 20& 21 as there are between the ages of 21 & 22. “How many students are there in juhjar’s class?
18,16,24,30,34

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~Sandeep~ 13 years AGO

@Piyush: Please read the rules for Prize here:
http://www.m4maths.com/prize.php

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Pargat Pal Singh 13 years AGO

I think question is right.

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Pargat Pal Singh 13 years AGO

Dear Admin,

question is
x + y^2 = 17
17 > y + x^2 > 14

How any value of x and y satisfy this condition


17 > y + x^2 > 14

I think there is no justification for this ambiguity .

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Vignesh 13 years AGO

Dear m4maths(Admin),
I submit solution for some problems, but my points not yet updated. Y Y Y :-)

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Vignesh 13 years AGO

Dear m4maths(Admin),

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~Sandeep~ 13 years AGO

Thanks for clarification :)

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~Sandeep~ 13 years AGO

Dear Admin,

Could you please share with us any values of x & y from the real set which satisfies all the conditions. Apologies but I tried my best but I am unable to find any such values of x & y from the real set.

Thanks,
Sandeep.

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~Sandeep~ 13 years AGO

Thanks a lot Dipin....
Dear Admin,
I wan't my 18 point instead of -1 :(

Sandeep.

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DIPIN 13 years AGO

I think inder and sandeep are right.

no value ( even imaginary ) of x and y can satisfy this condition

17 > y + x^2 > 14

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~Sandeep~ 13 years AGO

Dear admin,
I am confused wid todays puzzle solution of 3rd jan 2012, can you please tell us values of x and y greater than 1 which satisfies all conditions .
Sandeep.

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~Sandeep~ 13 years AGO

Hi Inder,
Agree with you...but there are 10 different options to choose and at least one of them I could see is still valid.

Cannot tell you the exact answer though :)

Sandeep.

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Inder 13 years AGO

In today's puzzle,

one condition is

17 > y + x^2 > 14

it means
17>14
which is not correct.

Pls check.

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hareesh 13 years AGO

pls to send me the shortcut formulas and methods of the aptitude test.

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mps gupta 13 years AGO

For today's puzzle I thought the speed will go till 100km/hr in 8th hour, but that doesn't seem to happen as per the given solution.

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~Sandeep~ 13 years AGO

For today's puzzle I thought the speed will go till 100km/hr in 8th hour, but that doesn't seem to happen as per the given solution.

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DIPIN 13 years AGO

missing series
4 4 6 12 30 --


missing series
4 4 6 12 30 90

4*1=4
4*1.5=6
6*2=12
12*2.5= 30
30*3=90

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Pargat Pal Singh 13 years AGO

congratulations, Dipin.

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yelender 13 years AGO

@ yelender goud :: pls to send me the shortcut formulas and methods of the aptitude test.

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DIPIN 13 years AGO

Dear Sandeep and Saranjit,

Thanks a lot.

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~Sandeep~ 13 years AGO

Congratulations Dipin!!!

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Saranjit Singh 13 years AGO

Congratulations, Dipin for solving 100 placement puzzles and winning a prize.

All the best.

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~Sandeep~ 13 years AGO

No Problem...you are welcome TIJO :)

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Tijo Jose 13 years AGO

@Sandeep: Yeah! How silly of me to think "all intersection points to be distinct" :) Thanks Buddy!!

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~Sandeep~ 13 years AGO

@TIJO: Not sure what did meant by "Can anyone tell me, how to draw 5 lines, which intersect only at a single point?"
Please refer following image where 5 lines are intersecting at one point:
http://tinyurl.com/8xf9mqx

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Tijo Jose 13 years AGO

The solution to 15-Dec-2011 says minimum number of intersection points of 5 lines is 1. Please help me understand this.

According to me, If no two pair of lines are parallel, then every pair must intersect at some point. Hence the minimum (and obviously,, the maximum also) number of intersection points has to be 10.

Please tell me where i am wrong in my calculation. Can anyone tell me, how to draw 5 lines, which intersect only at a single point? Thanks :)

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selva krishnan 13 years AGO

The puzzle is
there are three type of boxes,gold,silver,lead,
gold says, " ring is not in silver,
Silver says ," silver is not here,
lead says," ring is here"
Questions are where is the ring?
which one is say true and false?

i want answer 4 this

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sairam 13 years AGO

The puzzle is
there are three type of boxes,gold,silver,lead,
gold says, " ring is not in silver,
Silver says ," silver is not here,
lead says," ring is here"
Questions are where is the ring?
which one is say true and false?


i want answer 4 this

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Karthick Babu 13 years AGO

For (6-12-20110 puzzle) velocities in m/s are 18*5/18 = 5 m/s and 90*5/18 = 25 m/s
and 2 km = 2000 m
so acceleration = 30*20/2*2000 = 0.15
=(m/s*m/s)/m
=m/s^2
Answer should be in m/s^2 unit
but opt 10 is none of these. opt 10 only create big confusion on this Question.

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Koushik Paul 13 years AGO

@Balakumaran: Its ok........you are welcome...

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Koushik Paul 13 years AGO

Sorry friends the unit will be m/sec^2....

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Koushik Paul 13 years AGO

I am agree with Dipin about todays (6-12-11) puzzle's option. The unit of accelaration is m^2/sec no m/s....What a silly mistake...

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Balakumaran N.A 13 years AGO

@DIPIN: I agree with You for Today's (6.12.11) Puzzle.

Acceleration = m / sec^2 always...

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Balakumaran N.A 13 years AGO

@KALIDAS (2011-12-01):Agree with KALIDAS;
Pls check qn.
x^4 when divided by 6, will provide (here x is prime number) ????

Qn is not clear.
What is actually desired ???

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Balakumaran N.A 13 years AGO

@KOUSHIK PAUL: I got it, Thanks a lot for your Solution on 24.11.11;

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~Sandeep~ 13 years AGO

Agree with Dipin.
"None of these" option is very confusing in such cases.

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DIPIN 13 years AGO

In today's puzzle
The formula for finding the acceleration of the car is
a = (product of sum and difference of velocities)/2(total distance)
In a journey of 2 km, initial and final velocities of the car are 18 km/hr and 90 km/hr respectively. Calculate the acceleration.


I think Units of the accelration in given options are m/s due to printing mistake otherwise it should be m/sec ^2.

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Koushik Paul 13 years AGO

Agree with KALIDAS

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Kalidas 13 years AGO

Pls check today's qn.
x^4 when divided by 6, will provide (here x is prime number) ????

Qn is not clear.
What is actually desired ???

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DIPIN 13 years AGO

Dear Admin,

Thanks a lot for taking necessary action.

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suryambika 14 years AGO

admin sir...
i m for ABES ENGINEERING COLLEGE GHAZIBAD...
but the name of college is not in the list of colleges when filling the profile information.. please update is college name in list of uptu colleges.. otherwise give a column where students can give their college name if that is not in list..

please update my college name as ABES ENGG COLLEGE

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~Sandeep~ 14 years AGO

Would someone from m4maths look into last 7 comments and post a clarification /correction?

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Mihir 14 years AGO

Admin sir,

Pls check sol of this puzzle and give correct solution .

6 boys and 7 girls are available for a counselling. In how many ways, we can arrange them in a row, if middlest one is a boy and girls are sat on both the corners.

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Jason 14 years AGO

I think that observation made by Dipin and sandeep is correct.

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~Sandeep~ 14 years AGO

@Admin Sir are you listening.... feeling bad to see my last day point as -2 :)
---------------------------------------------
Last Day Points -2
My Answer 6

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Mihir 14 years AGO

I think Dipin and Sandeep are right.

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DIPIN 14 years AGO

Thanks Sandeep for confirming that.

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~Sandeep~ 14 years AGO

Agree with Dipin. Please check the solution

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DIPIN 14 years AGO

Dear Admin,
Pls check sol for thursday puzzle

6 boys and 7 girls are available for a counselling. In how many ways, we can arrange them in a row, if middlest one is a boy and girls are sat on both the corners.


Answer accepted is 126*10! which may not be correct.
As there are 7 girls . They can be selectede in group of two in 21 ways.
In each group, these 2 girls can be placed on two corners in 2 ways.

6 ways for boy at centre
2* 21 ways for girls at corners
10! ways for remaining 10 children at other 10 places.
So total arrangements are 2* 6*21*10!= 252*10!...option 6

Pls correct me if I am wrong.

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Koushik Paul 14 years AGO

@BALAKUMARAN : At first u should read yhe puzzle carefully...When the American time is 16.30 then Indian time should be (16.30+5.30)=22.00. Here we should add the time not subtruct. Because in the problem it is clearly mentioned that the time diff. between India & America is +5.30 not -5.30. If in the problem there mentioned that the time diff. between America & India is +5.30 then we should subtract the time, one thing also why u can mix up between time format?...got it...Is it helpfull to you plz reply...

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Koushik Paul 14 years AGO

@TAMALIKA : The ans should be D) Rs. 9000

Because A do the business for 12 months and B do the business for 7 months.
Let B contribute Rs. x.
so, 3500*12 : 7x = 2 : 3
=> x =(3500*12*3)/(7*2) = 9000....
If it is helpfull to you plz reply...
I have an query, don't mind..where r u from ?...

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