Tijo Jose 15 years AGO

Congratulations Mr. DIPIN on reaching 1000 points!!!

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kappa 15 years AGO

happy new year to all m4maths users

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Rijo 15 years AGO

gud Tijo, i also have the same doubt with that question

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Mayur 15 years AGO

It is given that Surjeet gets success either according to mark sheet obtained or according to corrected mark sheet.

.
.
What are the passing/success marks and number of subjects in this qn?

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Tijo Jose 15 years AGO

In the puzzle named mystery number of placement puzzles section, the third clue should read C-F=E-I=5 and not C-F=E=I=5

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DIPIN 15 years AGO

I think there are 2 options which satisfy the given conditions in the question posted on 28.12.09.

If only integer prices are alloed , then one option.

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Tijo Jose 15 years AGO

Merry Christmas to all of you!

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hitesh gakhar 15 years AGO

@admin!!!my wrong dp is displayed here..

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hitesh gakhar 15 years AGO

Mr tijo jose, most of your answers are reasonless at placement puzzle sections... please dont forget that...

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hitesh gakhar 15 years AGO

why are there no new placement puzzles??

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DIPIN 15 years AGO

I think, In todays qn,

The price per unit of 1 kw should be Rs. 2.15 per unit and not for per unit of 1000 KW.

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DIPIN 15 years AGO

Hey Mr. DIPIN, I would be thankful if you could tell me how you got the answer to the following question...

1,
11,... one 1 in earlier no.
21, .... two 1s in ealier no
1211, .... one 2 , one 1
111221,..one 1 one 2 two 1in above number
312211... similarly three 1s, two 2s . one 1 in earlier no (111221)

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Dolly 15 years AGO

In today's qn, I think

In place of 1000 kilowatt per hour consumption of electricity is known as 1 unit ,

It should be

1000 watt per hour consumption of electricity is known as 1 unit

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Tijo Jose 15 years AGO

And guys, it would be helpful for others, if you could give steps on how you reached the answer, at the Placement Puzzles section, when you post an answer to some puzzle.

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Tijo Jose 15 years AGO

Hey Mr. DIPIN, I would be thankful if you could tell me how you got the answer to the following question...

1,
11,
21,
1211,
111221,
What's the next line?

You answered 312211

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Daniel 15 years AGO

Hooray! A meaningful question that doesn't involve guessing patterns at random! Let's see some more of these.

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Tijo Jose 16 years AGO

Check out the placement puzzles page... There are so many puzzles to be solved. These should be put up at the main puzzle page. Also, please check the puzzles page, some of the questions do have received right answers in the comments and are still set with status "Unsolved".

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Tijo Jose 16 years AGO

It feels pity that so many people got right answer to 09-Dec-2009 puzzle and yet, no one had a comment to match with the admin's logic. Also, I agree with Mr. Daniel. The puzzles posted must be of solving type in Mathematics and logic, and not find odd one out and other find code type. It feels very boring when the volume of such coding puzzles increase. Once in a fortnight, it is ok to have some codes or so. But other days, there must be well-solvable logically challenging maths problems.

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Dundi 16 years AGO

for the puzzle yesterday i.e. 7/12/2009 answer shown by ADMIN is FOOT i.e. option 3.... However, you awarded points to some other people who gave answer as FUN i.e. Option 10.

How can you award points like that...? As there can be only one answer. that is what ever admin gives that will be final...

Please clarify this....

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Dolly 16 years AGO

I agree with Daniel.

I think I have also answered option 10 ( FUN) as my answer but got -1 marks.

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Daniel 16 years AGO

That last puzzle wasn't exactly reasonable... sure, "FOOT" was the only word with a double letter, but you could just as well say that "FIGURE" was the only one with three vowels (or with six letters), and "FUN" was the only one where the letters added up to a prime (which seems *much* more reasonable than the other option.) You could easily come up with just-as-reasonable justifications for several other options as well.

I certainly don't think I should *lose* points for not guessing the particular criteria you wanted when there were several other that were no more or less reasonable.

Again, if there were more problems that actually stated a math problem and fewer that asked you to find a pattern in a series of words, this wouldn't be such a huge issue.

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abhishek maji 16 years AGO

how can i give tests on this site

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Daniel 16 years AGO

If we could get a few more puzzles that are actually well-posed math problems and a few less that consist of "ABCDE = 15, PQRST = 12, keep guessing patterns until one works out!" I feel it would be a good thing.

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Dolly 16 years AGO

Thanks, Deepak ji.

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Aman 16 years AGO

I have already answered according to first class marks.
Check my message on 21.11.09.

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Tijo Jose 16 years AGO

21-nov-09 puzzle: yeah. it is right. there are two sets. the correct answer should have been 90. but look at this: it is given that amit got a first class certificate. how will anyone get a certificate for scoring 9 out of 100? may be the m4maths team considered only those scores which amit had to score for a win in all subjects.

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Deepak 16 years AGO

Congrats Dolly,keep it up

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Dolly 16 years AGO

In Sat puzzle, There are two set of numbers but solution given by admin has considered only one set.

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Aman 16 years AGO

problem with Saturday's (21-nov-09) puzzle

In that puzzle, sum of marks should be 339.

possible numbers are 81,81,64,64,49
and
100,100, 81,49,9

so total possible arrangements were 30+60=90.

but 90 was not in options.

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Tijo Jose 16 years AGO

What is the problem with Saturday's (21-nov-09) puzzle? Correct answer is 30 (option 8). it is given in the list of options. so what is the problem?

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Aman 16 years AGO

I think correct answer for today's ( 21.11.09) is not given in options.

Answered the puzzle based on first class marks only.

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Karan 16 years AGO

I think correct ans for sat. Puzzle is not given in options.
Pls check.

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Daniel 16 years AGO

How do we see the standings for U.S. and U.K.?

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Tijo Jose 16 years AGO

The new looks of the site is amazing. Dear admin, will you please clear my doubts? It has been displayed that be one among top 5 to win prizes. By that, did you mean that top 5 people of a week will get the respective prizes every week? Or is the minimum cut-off of 80 points still valid? I would also like to point out that m4maths is printed out wrongly as 'm4amths' in the today's puzzle page, just above today's puzzle, where the italic writing has been employed. Once again, the new looks are awesome.

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Daniel 16 years AGO

Yeah, what Pratham said.

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sujit 16 years AGO

Well..yes I am sorry....I understood my mistake [:)]

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sujit 16 years AGO

Dear Admin

todays question was "Three non parallel tangents are drawn in a circle. What is the probability that it would be an incircle."

As I understand the meaning, "We are given with a circle and then we are trying to draw 3 tangents which are not parallel to each other. Now we have to calculate whether the given circle will be an incircle or not."

For a case of 3 non parallel tangents, it will always be a circle.

The answer could have been 1/4 if the question was given something like "a circle is given and three [b]Random[/b] tangents are drawn.. whats the probability that it is an incircle?"

Kindly check my logic

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vijaya 16 years AGO

if i got 80 points after getting prize money,my points r safe r removed..

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Dolly 16 years AGO

Nice suggestions.
I would like to suggest admin to check the logic given by other members also to check if there is any controversial option .In such questions , there may be more than one possible solutions depending on approach of individual. The time limit can be given up to 11 PM and result can be declared at 0000 hrs or later after checking the solutions/logics given by members.

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Pratham 16 years AGO

Dear admin, since I have started to like the concept of the website, I would like to point out a few things that do not look so good.

The introduction says: "Warning: Please think before Joining (girls)."

What is the purpose of mentioning (girls) in this statement? Is it any subtle kind of pun that I don't understand or even find tasteful?

And secondly, why is the linguistic level so bad on this website? There are too many errors throughout the webpages. It would certainly help to correct them.

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Tijo Jose 16 years AGO

Dear admin, thank you for considering my suggestion. I would like to make into your notice a mistake. In the "maths quotes" page, one quote has been cited twice, each time, it appears to be said by different people. Can you clarify that? It is just, Math is always perfect and I would like our site to be too. The quote is "Mathematics is the supreme judge; from its decisions there is no appeal.", cited by "John Louis von Neumann" and "Tobias Dantzig". Please clarify or rectify this. By, the way the quotes page is superb too! Keep the good work up. We all are with you.

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Tijo Jose 16 years AGO

Well, not to take away anything, This is the best site for all us MATH lovers. I simply love cracking all these puzzles and questions and everything put up at 11:00 am. I mean, we all love cracking them. I would like to put up a suggestion. There should be a forum to post our own questions. The admin can then review it and, if standard it is up to the mark, can put it up one day FOR OTHERS to crack.

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Unni 16 years AGO

Thanks admin, its good that you accept your mistake and gave points accordingly, But Since the other option was also correct in some way they didn't deserve a negative point.

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SUJIT 16 years AGO

Thanks admin

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Dimple 16 years AGO

Thank God, My correction will yield good result now.

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Arneet 16 years AGO

It is good to see that admin has accepted its mistake.
hope the deserving ppl. are awarded with correct points.

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Pargat Pal Singh 16 years AGO

Thanks a lot.

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Divya 16 years AGO

Can I know who is challenger of the day Now?

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Divya 16 years AGO

Thanks a lot for reconsidering the decision and doing justice to all .

All the best.

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Pargat Pal Singh 16 years AGO

I congratulate all those who are benefitted by this shocking mistake of admin.

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Pargat Pal Singh 16 years AGO

Unbelievable !

How the given logic can be accepted ?
The logic should satisfy all the given examples.

As only composite and non composite number satisfies all examples and according to that , option 1 should be correct,

It should be considered as only acceptable answer.

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Pratham 16 years AGO

Dear Admin,

As has been mentioned by many people, the given answer for yesterday's puzzle isn't correct. To me my logic sounded correct in which code is formed by (number of primes and of "digit 1")/remaining number of characters. '1' not being the prime number, has to be included in the logic as an addition to the counting of prime numbers.

Without inteding to sound fussy about it, I would like to mention that earlier as well, in my 8th October post, I have given a correct alternative solution. Like some others who get points for the correct alternative for solution, my answer should also be considered.

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rajendra 16 years AGO

Option 1 should be declared as the correct answer and points given should be reconsidered

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Aman 16 years AGO

I agree with SUJIT, SURAJ, PRIYATOSH, DOLLY and MAYUR.

To err is human but others should not be punished to benefit others who have given wrong answer.

So only option 1 should be considered correct.

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Mayur 16 years AGO

For previous day puzzle
CODE FOR LOYE

The logic given was based on ODD/Even position of letters in the word.

But this is not correct in case of SIJM... 2/2.
If someone can find 2 even numbers in SIJM = 19 9 10 13, then it is cruel joke on mathematics.
The mistake may be due to some typing error at some stage while deciding/posting the puzzle on site, but the logic given by the persons giving correct ans as option 3 may come forward to give suitable logic to satisfy all codes .

Otherwise admin and everyone concerned should gracefully accept option 1 as correct answer which satisfies the logic of composite and non composite numbers .

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Dolly 16 years AGO

Code for SIJM . . 2/2 does not satisfy the logic of odd/even.
Only logic of composite & non composite iis matching & then option 1 shoud be correct.

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PRIYATOSH MALLICK 16 years AGO

how can SIJM be 2/2
if we go through the logic given today in the explanation, SIJM will become 3/1

So i completely agree with Sujit and request M4Maths Admin to change the answer and the logic :)
Thank u

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SURAJ MODI 16 years AGO

Concept according to SUJIT is also applicable so both the answers should be considered.

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SUJIT 16 years AGO

Dear Admin

For puzzle of dt 27 oct
the reason submitted was

"Positions of X, M, A & T in English alphabet are 24, 13, 1 & 20.
Two numbers are odd and two numbers are even, hence code is 2/2
Similarly positions of L, O, Y & E in English alphabet are 12, 15, 25, 5
Three numbers are odd and 1 is even, hence code is 3/1.
"

But if we apply the same logic to SIJM = 19 9 10 13 odd/even = 3/1
But in the qn it is given 2/2
Kindly check the answer given by me and explain the SIJM concept.

I think that the answer would be prime/composite = option#1

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Dolly 16 years AGO

It is nice that admin is accepting the other answers also which satisfy the logic even if it does not match with its own answer.

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Tijo Jose 16 years AGO

Thank You Anuradha.

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Anuradha 16 years AGO

Really very nice approach by Tijo Jose for 23 oct puzzle. congrats. Great puzzle and even better was the solution by tijo josh.

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sujit 16 years AGO

Thanks Admin..

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SUJIT 16 years AGO

Dear ADMIN
kindly answer my query... and please go through the answer and the reason I hav submitted for today's puzzle

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SUJIT 16 years AGO

In today's puzzle<20 Oct> we can solve it by another way also

delete the third digit of every number and add the remaining digits... if the result is a 2 digit number, then again add the two digits to get a single digit...
check this out.. this is valid for the three given conditions.

I think there were 2 unique solutions and hence both the answers should be considered.

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Mayur 16 years AGO

Is it history Quiz or maths puzzle ?

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SUJIT 16 years AGO

I agree with mr Sunil... we should be getting more maths problems on this site rather than problems testing mental ability

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Sunil Tank 16 years AGO

hi,
when can we get some maths problems on this site?
whenever I visit this site, i find logical problems most of the times?

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Sukham 16 years AGO

Congratulations, Dipin.

Nice idea for token gift in case of prize of RS 500.

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DIPIN 16 years AGO

Received cheque of Rs 500/- as prize for scoring 80 points in a week.

Thanks a lot.

It is proposed that a token gift from Puzzle up (of same amount ) can be given in place of cash amount in such cases.

Regards,

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justine 16 years AGO

qn. was not clear today

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DIPIN 16 years AGO

How many combinations are possible if 3 one rupee coin, 4 fifty paise coin and 2 twenty five paise coin are available. It is compulsory to select any one of the coin.

The question is not clear.
Whether various combinations of coins are required or possible combination of amount made by selecting different combination of coins??

Also it is not clear whether combination with atleast one coin of each type is required or combination of only one coin of any type is also to be counted.

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Pratham 16 years AGO

In general, what if there are multiple valid ways of solving a puzzle, and each may lead to a unique answer?

e.g. yestedays's puzzle
If in a coded language 6^3 =15 4^2 =14 8^4 =16
Then 9^5 = ?
OPTIONS 16 10 19 12 14 13 15 17 18 11

There is even simpler way to get a unique answer here than what was mentioned officially.

Difference in the digits on RHS = Difference in the digits on LHS +1

This gives 16 as an answer.


This (or for that matter any other) answer can be regarded as wrong only when it is not unique.

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cyril k joy 16 years AGO

i think today's ans is not given in the options

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DIPIN 16 years AGO

Thanks a lot.
Regards.

Dipin

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Rijo 16 years AGO

congrats mr.Dipin.......
Keep it up

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Pargat Pal Singh 16 years AGO

Congratulations, Dipin for achieving the score of 80 in a week.

All the best.

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Wafa 16 years AGO

puzzle on 29-09-2009
Next number of the sequence 1, 4, 13, 40 ...... will be ?

Reason is given as
This sequence is 1, 1+3, 1+3+32, 1+3+32+33, 1+3+32+33+34

Please Check it
The Correct reason is
1,1*3+1=4,4*3+1=13,13*3+1=40,40*3+1=121......

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DIPIN 16 years AGO

I agree with suggestion given by Pushpendra.

There should be option for correcting the mistake with negative marking for second attempt.

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Pushpendra 16 years AGO

There should be two buttons of submit. One for the answer and one for the reason. Because to write the reason it take some time which is the major cause for the delay in the answer submit due to which a candidate get less score in comparison to the direct submit of the answer

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Pushpendra 16 years AGO

And i mam sure that the answer given by Anuradha
(Raytech software)is totally guess.

So, Plz give me the justify answer, i fo not satisfy the reason of the puzzle of 25/09/09

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Pushpendra 16 years AGO

I do not agree with the reason of the answer of the puzzle of 25/09/09.

Plz satisfied me, i will very greatfull to you.

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Deepak 16 years AGO

Thanks Dimple,
Its a wonderful concept and we are somewhere part of it.
take care

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Deepak 16 years AGO

Thanks M4math team,
I have received my cheque of 500 rupees, but the refreshing puzzles throughout the week are my Priority,Keep the good work going....
Finally congratulation Rajan.

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Rajan(PP SINGH) 16 years AGO

Dear Sir,
Thanks .
I have received the cheque of Rs 500 as a prize for securing 80 marks in a week.

Regards.


P.P.Singh ( Rajan)

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rijo 16 years AGO

congrats Pargat Pal Singh and Deepak........
keep it up.

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Pargat Pal Singh 16 years AGO

Thanks a lot.

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jithu 16 years AGO

congrats Rajan And Deepak......

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Dimple 16 years AGO

Congratulations Rajan and Deepak.

Keep it up.

Regards

Dimple

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Mehul MKDP 16 years AGO

I also do agree with Dolly that change in ans. should be allowed.

but no negative mark;
do only that ANYone cand change his/her answer option and submit;
and mark will be given on the base of last ans and time.

ok; we can restrict freq. change by negative mark if someone change freq.
i.e. if change >= 3 -1 Marks;
if change >= 5 -2 Marks; likewise

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Arneet 16 years AGO

Nice suggestion by Dolly.

Please accept it.

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Jakes 16 years AGO

I too agree with DOLLY & DIPIN

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