Hello folks,
Today I am posting an Interview Puzzle which was asked to my friend in his Interview. This puzzle will be helpful in job interview preparation.
I have also posted many puzzles for interview before, you can read here :
1) 100 doors in a row Visit and Toggle the door. What state the door will be after nth pass ?
2) 25 horses 5 tracks Find 3 fastest puzzle
3) N Petrol bunks or City arranged in circle. You have Fuel and distance between petrol bunks. Is it possible to find starting point so that we can travel all Petrol Bunks
Presenting the Brain Teasers.. :D
Two MIT math grads bump into each other at Fairway on the upper west side. They haven’t seen each other in over 20 years.
the first grad says to the second: “how have you been?”
second: “great! i got married and i have three daughters now”
first: “really? how old are they?”
second: “well, the product of their ages is 72, and the sum of their ages is the same as the number on that building over there..”
first: “right, ok.. oh wait.. hmm, i still don’t know”
second: “oh sorry, the oldest one just started to play the piano”
first: “wonderful! my oldest is the same age!”
problem: how old are the daughters?
Solution: start with what you know. you know there are 3 daughters whose ages multiply to 72. let’s look at the possibilities…
Ages: Sum of ages:
1 1 72 74
1 2 36 39
1 3 24 28
1 4 18 23
1 6 12 19
1 8 9 18
2 2 18 22
2 3 12 17
2 4 9 15
2 6 6 14
3 3 8 14
3 4 6 13
| Best book to prepare for Puzzle is = > |
finally the man discovers that there is an oldest daughter. that rules out the “2 6 6” possibility since the two oldest would be twins. therefore, the daughters ages must be “3 3 8”.
(caveat: an astute reader pointed out that it is possible for two siblings to have the same age but not be twins, for instance one is born in January, and the next is conceived right away and delivered in October. next October both siblings will be one year old. if a candidate points this out, extra credit points to him/her.)
this question is pretty neat, although there is certainly a bit of an aha factor to it. the clues are given in such a way that you think you are missing information (the building number), but whats important isn't the building number, but the fact that the first man thought that it was enough information, but actually wasn't.
If you want to buy any puzzle book I have shown above. It will be helpful in any interview puzzle :D
Want to share any question ? Solutions ? or have any company Experience ?
You can also subscribe us for more interview questions :D
Please do share with us at admin@gohired.in , As sharing is caring
