DIPIN 13 years AGO

Dear Admin,

Thanks a lot.
Regards,

Dipin

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MP 13 years AGO

I think Dipin and Ashu are right.

Please correct the answer.

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Ashu 13 years AGO

In yesterdat's qn

After every hour a number increases 15 % of its present value. How many times it will increase in 8 hours

The number will become 3 times but increase will be 3-1=2 times.

Pls check and correct the answer.

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DIPIN 13 years AGO

Pls check the qn.

After every hour a number increases 15 % of its present value. How many times it will increase in 8 hours.

Pls check that new value will become 3 times the original value after 8 hours but the no of times , its value is increased is 2 times.
The qn is about increase in value and not about final value.
so answer should be 2 times and not 3 times.

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Karthick Babu 13 years AGO

Thank You Admin

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krishna kumar gupta 13 years AGO

Theses days why puzzles r not being given?

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C.T.Narayanan 13 years AGO

Where are the puzzles? ans What happ to the site?

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Balakumaran N.A 13 years AGO

Hi admin,
You have displayed the saturday(18.6.11) question today(20.6.11) only...I checked saturday also, no question on saturday. So, what about today(20.6.11) question??...

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Venkateshwar Iyer S 13 years AGO

Today's Puzzle not available till now?

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dharmaveer 13 years AGO

hi,

for firday's question (17-06-2011): total minutes between 3:12 PM to 8:46 AM will be

i have kept option 10 as correct one.

but points are not added and also not showing my name in "result" tab for 17-06-2011

look into this and add points.

thanks,
dharma.

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Karthick Babu 13 years AGO

Hi Admin,
I really hate your administration. Because Saturday (18 June 2011) and Sunday ( 19 June 2011) I visited your web site but that question was not displayed that time. Now Today (20 June 2011) I saw your question. I have proof also, see my comments on 18 June 2011 in discussion board.

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Karthick Babu 13 years AGO

Hi Admin,
For Friday(June 17th) Puzzle Answer is Option 10. I also choose Opt 10 only but i credited points as (-1) please check with my answer and explanation.

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pravat ranjan giri 13 years AGO

college of engineering bhubaneswar is not in your list from orissa and tell me how to upload a photo bcz it doesn't

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~Sandeep~ 13 years AGO

Plz check option for today's puzzle. As 2 is the correct answer, so option 8 would be the correct choice.

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Datla Venkata Kanthi 13 years AGO

Any response to Dharmaveer's logic, I too agree with it.

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dharmaveer 13 years AGO

for fridays (june 10th) question
A man starts to run along a particular direction with a speed of 54 km./hours. After running upto a distance of 100 m, he increases his speed by 50 % of the initial speed, and runs upto 200 m. Total time taken by the man will be

actual answer we will get is
15.55555.........

as per general mathematics, 15.555555... rounded to 1 digit will be 15.6(as this is not in options) on further rounding of we get 16.

so option should be 5.

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sanjeev 13 years AGO

any one plz tell me how to upload pic on my profile...im facing probs in uploading my pic....

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KALPANA G 13 years AGO

thank u Garima

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Balakumaran N.A 13 years AGO

Dear Admin,
I am not able upload my picture, having size only 1.25kb (not a MB). Could you please solve this problem? Or not?...

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Balakumaran N.A 13 years AGO

Dear admin,
where is today (25.5.11) puzzle.
Its not yet uploaded...

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Dimple 13 years AGO

Pls check sol. Of puzzle dtd 6th May.
Total possible combinations are 60.
if there is condition that atleast one ball is to be chosen, then
acceptable comb. are 60-1=59

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Garima 13 years AGO

@ Kalpana,
A person goes to office either by car, jeep, bus or train. The probabilities of which being 2/7, 3/7, 1/7 ,1/7 respectively. The probability that he reaches office later if he takes jeep, bus, car or train is 2/9, 1/9, 5/9, 2/9 respectively.

pls note that here sum of prob. of using car, jeep, bus or train is 1.The probability that he reaches office later if he takes jeep, bus, car or train is 2/9, 1/9, 5/9, 2/9 respectively.
The probability that he reaches office in time if he takes jeep, bus, car or train is 7/9, 8/9, 4/9, 7/9 respectively. These prob have no relation with other mode . But sum of prob of reaching late or not using a particular mode is 1.

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~Sandeep~ 13 years AGO

Solution of 28 April,2011 puzzle was based on conditional probability.

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Karthick Babu 13 years AGO

If any one knows different explanation then no problem share with us for 28 April,2011 puzzle.

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Karthick Babu 13 years AGO

I can't understand the explanation for 28 Apr,2o11 Question. The Question Was "A person goes to office either by car, jeep, bus or train. The probabilities of which being 2/7, 3/7, 1/7 ,1/7 respectively. The probability that he reaches office later if he takes jeep, bus, car or train is 2/9, 1/9, 5/9, 2/9 respectively. If he reaches office in time, then the probability that he travelled by car is" but answer explanation was " the probability that he travelled by car is 2/7
The probability that he reaches office later if he takes car is 5/9
So probability that he reaches office in time by car =(2/7)*(4/9)= 8/63
Similarly probability for jeep = (3/7)*(7/9) = 21/63
Similarly probability for bus = (1/7)*(8/9) = 8/63
Similarly probability for train = (1/7)*(7/9) = 7/63
so required probability = (8/63)/(8/63)+(21/63)+(8/63)+(7/63)= 8/44 = 2/11" First how comes "(8/63)/(8/63)+(21/63)+(8/63)+(7/63)=8/44" ?

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KALPANA G 13 years AGO

dear admin, is todays puzzle currect. sum of all the probabilities should be one. but in our puzzle sum of all the probabilities is not one

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Avinash Gupta 13 years AGO

Please add ACADEMY OF TECHNOLOGY(AOT) to your list.......

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suneelkumar.avvari 13 years AGO

give the solutions for questions in the test conducted on april 10th

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suneelkumar.avvari 13 years AGO

thank u for conducting the test

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~Sandeep~ 13 years AGO

Agree with MP for Firday's Puzzle

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Aman 13 years AGO

For friday puzzle,

4 digit numbers =96
5 digit numbers=96

How 120 is considered correct ?

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SHWETA KUMARI 13 years AGO

maths tricks is very useful

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Dimple 13 years AGO

Pls check this qn.

How many 4 or 5 digit numbers can be formed by using 0, 1, 3, 5, 8. Repetition is not allowed.

None of the given options is correct.
No. of 4 digit nos that can be formed by using 0, 1, 3, 5, 8.( Repetition is not allowed.)=4*4*3*2=96
No. of 5 digit nos that can be formed by using 0, 1, 3, 5, 8.( Repetition is not allowed.)=4*4*3*2*1=96
Total No. of 4 digit or 5 digit nos that can be formed by using 0, 1, 3, 5, 8.( Repetition is not allowed.)=96+96=192

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MP 13 years AGO

For friday puzzle,
I think 120 is not correct.
It rhould be 96 or 192.
Pos check.

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krishna kumar gupta 13 years AGO

dear admin
i would like to request for changing the timing of daily question.please shift it to 8 a.m. instead of 11 a.m. because in most schools and college's timing are not relevant to this.Generaly we go their colleges at 9 a.m. and come till 2p.m. thats why we always becomes late in giving the answers at 11 a.m. whisch are not feasible for us.
so please try to understand our problems and change the timing..

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Mahesh 13 years AGO

Are the trains moving in circular path or linear path ?

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DIPIN 13 years AGO

For today's puzzle
Two trains are moving with speeds 40 km/hr and 50 km/hr in same direction. Train with speed 40 km/hr is 30 km ahead of the second train.
Total path required for making a meeting of the two trains is ....

The final statement should be
Minimum path required for making a meeting of the two trains is ....

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Sumandeep Ghosh 13 years AGO

It was a great site and happy to see the site is growing fast..
I got placed in TCS and the site had helped me really a lot..Thank u M4MATHS..

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~Sandeep~ 13 years AGO

Hi Admin,
Even after participating in Sunday's Test I could not see my name listed in Test Result. What could be the reason for same.
~Sandeep.

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~Sandeep~ 13 years AGO

Hi Admin,
When would be the results of online test declared?
Sandeep.

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rahat 13 years AGO

sir, kindly add DAVIET, jalandhar to your list.

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gopi uttarakavatam 13 years AGO

sir,when todays test result will be announced??

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sir amit nathani 13 years AGO

dear admin,
My college name is not available for M4maths Test...College name is Noida Institute of engineering & technology...Affilitated to Uttar pradesh technical university..

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Saswata Chakraborty 13 years AGO

Dear admin, i sent my solution of last day's puzzle,,,but it is not being shown in the solution list....why?

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ULAGUNATHAN 13 years AGO

Dear Admin,I can't able to upload my photo.My Photo size is only 80KB.But I can't upload it.

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Murthy Ch.v.v.s.s.s. 13 years AGO

Hi.. team,

i could not able to upload my photo, eventhough it is in Jpeg format and is 70kb only. so pls help me in this regard at the earliest.

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DIPIN 13 years AGO

In this puzzle

A man has four pants of blue, grey, black and light black colours. His shirts colours are white, red, lined blank and box black. How many pairs of shirt and pant are possible. If following combinations are not allowed.
1) He doesn't put on blue pant and red shirt.
2) He puts on grey pant with only box black shirt

Please confirm whether this statement is correct

If following combinations are not allowed.

I think there is one condition which is not allowed and other condition should be allowed.

I think the statement should be

To find combinations subject to following conditions.


pls clarify.

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ULAGUNATHAN 13 years AGO

Dear Admin, how to edit my picture. which size of pictures it accept?

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ULAGUNATHAN 13 years AGO

Thank you so much to m4maths.com, It is very useful.. I can't say in words.. thanks , thanks.. thanks.. we can learn more puzzles.

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Karthick Babu 13 years AGO

Hi admin,
Thank you for considering valuable feedback.

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~Sandeep~ 13 years AGO

Hello Admin,
Could you please re-look into the options for puzzle dated :2011-03-17. Seems more than one option were correct.

~Sandeep.

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V.V.Ravi Teja 13 years AGO

thank u m4maths because of you and my co people who solved some complex problems for me...why because due to this only i got placed in tcs and hcl also........

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suman ghosh 13 years AGO

my college name is not present in the list of the colleges u given to select.
my college name is COLLEGE OF ENGINEERING & MANAGEMENT , KOLAGHAT

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~Sandeep~ 13 years AGO

Dear Admin,

I believe even option 3 for yesterdays puzzle is correct:
"Q. The total cost of 6 Kg. X, 5 Kg. Y and 7 Kg. Z is 125 rupee. Select any one of the following set of rates for X, Y and Z respectively."
Reason:
-------
Option 3 => 8, 7, 6
6*8+5*7+7*6 =125

Please Check!!!

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ULAGUNATHAN 13 years AGO

Dear Admin , If there is any possible to send the answer to the mobile number. ?

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pradeep kumar 13 years AGO

dear admin... plz provide the profile edit option which include the college name edit facility.because most of the member's college name was not in the list when they register for the membership so they have to choose the wrong college name.

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sandy 13 years AGO

my result is missing why

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sandeep reddy m 13 years AGO

THIS WEEK MY SCORE IS 75 BUT MY NAME IS NOT THERE IN RESULTS WHYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY

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Saibal Sanyal 13 years AGO

My college name is not listed.Please enlist the name Guru Nanak Institute Of Technology Kolkata in your list.

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Aman 13 years AGO

Depending on consideration of definition/age of new born child, the probability may vary.

If new born child is considered as child of age 1 day only, then prob can be 1 or 1/2.
If new born child is considered as child of age 1 year , then prob can be different..

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priyanka jain 13 years AGO

my college name is not present in the list of the colleges u given to select.
my college name is IIMT engineering college meerut.

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MSReddy 13 years AGO

"A tail has occurred in a coin" then probability of getting an even number in the dice would be" only 6 possibilities

u clearly given a tail has occured then the no of possibilities are only 6.
in this case probability is 1/2.
may i know the reason why my name is not there in results.

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kewal 13 years AGO

Dear Admin,
Pls check again .
I agree with Mahesh and Reddy brothers.

In the statement of coin puzzle, it clearly indicates that Tail has already occured in a coin. It means now dice is to be thrown and coin is not to be flipped again.

So the probability of getting even no will be 1/2 as 3 favourable chances out of 6 possible chances.

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MSReddy 13 years AGO

saturday questions answer is 1/2
because u given that the coin toss tail then probability so ht is not occured
so 3 favour out of 6
probability=1/2

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sandeep reddy m 13 years AGO

in yesterdays puzzle u give that the toss is tail
then only six possibilities.
in which 3 are favor
so probability=3/6=1/2.

if u not given the tail then the answer of u is correct.
lot errors and bugs
what is the need to maintain this much of error.

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Mahesh 13 years AGO

A coin is thrown. If head comes, a coin will be thrown again, otherwise a dice will be thrown. A tail has occurred in a coin, then probability of getting an even number in the dice would be 1/2 and not 3/7. because tail has already occured.
now dice will be thrown.
then possible positions are 1,2,3,4,5,6 and favourable positions are 2,4,6....... 3 chances.

so probability =3/6=1/2

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C.T.Narayanan 13 years AGO

Its given tail has occurred. Ans is 1/2

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pradeep kumar 13 years AGO

Admin sir,

would you please tell me about the ""state support and against"" what it is and what its purpose here along with its rules ? waiting for your response.....

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himani 13 years AGO

Is there any previous year placement paper for birlasoft

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neena 13 years AGO

in yesterday's puzzle you asked for the next number in the given sequence ......... and that was 999999 and not the answer you are giving

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sandeep reddy m 13 years AGO

hi admin i solve some placement puzzles bt i added no points and also tell the procedure of scoring

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Abhishek Agarwal 13 years AGO

Sir i am doing engineering from MNNIT allahabad in computer science. But when i click on "CLICK FOR NOMINATION" for the online test it says that "This test is for engineering student". How can i participate.

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pradeep kumar 13 years AGO

sir, plz add the college "SRMCEM, Lucknow" in your college list in U.P.....sir more details of my college you may visit on ""www.srmcem.ac.in""

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krishna kumar gupta 13 years AGO

sir plz tell me that how update my college name now which was not early included in list but now dat has been included in list....plz

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CT.Subbu Lakshmi 13 years AGO

I answered 3 for wed question and i am not provided any marks.

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meda visweswararao 13 years AGO

how u r nominated the coleeges ,we want to write the exam but there is no my college nam ,how can we writw my college name is VELAGAPUDI RAMAKRISHNA SIDDHARTHA ENGINEERING COLLEGE ,VIJAYAWADA ,A.P

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Subhradip Biswas 13 years AGO

to admin : in the "todays puzzle" published on 10/2/2011, i think you just missed the line in the question : "IN THE ORDER as these letters come in ENGLISH ALPHABETS",i,e,in the order a>e>i>o>u . there is present a,e & u....so,the possible word by the letters must have to follow the order as said, = 3p3.
so the answer will be 5!*(3p3)=720

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Neeraj Gupta 13 years AGO

sir plz add the college "BBDNITM,LUCKNOW" U.P. in your college list.

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Neeraj Gupta 13 years AGO

sir plz add the college "BBDNITM,LUCKNOW" U.P. in your college list.

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C.T.Narayanan 13 years AGO

Thank you. I have sent my address.

For Wednesday;s puzzle, x=-1 will also satisfy the equation.

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Karthik Pandiyan 13 years AGO

Hello Admin ,
I have a question regards 08-02-2011 puzzle.

(x^x)^x – x^(x^x) = 0
How many values of x are possible?

Apart from solution for x = 1 and 2 , If we put x=-1 , that also satisfies above the condition
Please advice me on the above . Thanks in advance

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goutam Choudhury 13 years AGO

after giving right answer on 10-2-11 score show -1 pls clarify

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Dimple 13 years AGO

For yesterday puzzle

Number of methods will be

5! * 6p4

as 4 girls can be placed at the locations marked by X in

XBXBXBXBXBX

120*6*5*4*3=120*360

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pradeep kumar 13 years AGO

sir, plz add the college "SRMCEM, Lucknow" in your college list in U.P.

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krishna kumar gupta 13 years AGO

please add the college BBDNITM LUCKNOW U.P. in your college list ...

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DIPIN 13 years AGO

For yesterday's puzzle

How many methods are possible for arranging 5 boys and 4 girls in such a way that no 2 girls could sit together?

People here have considerede only one arrangement.
i.e.BGBGBGBGB

where as following arrangements also satisfy the given condition
GBGBGBGBB
GBBGBGBGB
GBGBBGBGB
GBGBGBBGB
BBGBGBGBG
GBBGBBGBG
and few more .

It is sure that 2880 is not correct for the given statement of question.
Such repeated errors/mistakes are damaging the reputation of such a nice site with so many intelligent members.

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Dimple 13 years AGO

I think answer given by site administrator for the puzzle (How many methods are possible for arranging 5 boys and 4 girls in such a way that no 2 girls could sit together?) is wrong.

Mr. Biswas has also accepted the same and commented as
there are 10 ways...
and 5!*4!*10=2880
i m not sure ...admin ...plzz update the correct answer clearly fr better understandin......plzzz!!!!

I think
The correct sol will be 5!*7p4
or 120*7*6*5*4.

Pls check and correct.

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Vadivelan M 13 years AGO

@ Prerna,

According to your explanation,

when the condition states three consecutive integers are not allowed, will that mean two consecutive integers also not allowed & also same integer not allowed??? that doesn't imply such way... sorry...

and for Friday puzzle, you can refer postings by MP and Jamat. As they said 52 is the correct answer.

The main thing is 5 boxes r similar so don't consider the order of boxes. Just check for splitting the letters among the boxes. 5,0,0,0,0 4,1,0,0,0 and so on... in that u have to consider which letters u r choosing as group. hope those 2 posts will show that splitting. Here i couldn't explain full scenario as it would be very lengthy. thanks.

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Dimple 13 years AGO

For today's puzzle

How many methods are possible for arranging 5 boys and 4 girls in such a way that no 2 girls could sit together?

I think correct answer is not given in options.

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susmit 13 years AGO

for the puzzle dated 4/2/11,
proper points are not alloted.

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Subhradip Biswas 13 years AGO

sir plzz add BIRBHUM INSTITUTE OF ENGINEERING & TECHNOLOGY...SURI......

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Prerna 13 years AGO

@ Vadivelan,

when even successive integers are not allowed, then how same integer can be allowed in Thursday puzzle?

Can you please explain the logic of your answer for puzzle dated 4/2/2011 for 5 letters and 5 boxes.

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MP 13 years AGO

Dear admin,

Pls check that my answer was option 10 but I am still getting -1 mark .

pls correct the status .

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