Quant, Math & Computer Science Puzzles for Interview Preparation & Brain Teasing A collection of ~225 Puzzles with Solutions (classified by difficulty and topic)
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This is not a puzzle. So, for those of you who follow this puzzle blog, please bear with me for just one post. Interesting Math in this article though :P
Most of my friends already read an article that I wrote more than an year back - "Speak Up"
Here, inspired by the movie, The Beautiful Mind, I give a mathematical analysis of asking a girl out. Nice time it is. Feb 10. No plans for Feb 14 and I am sure this article makes me look even more geekier and all the more reason for me to believe that I will be alone, yet again. But what the hell, lets do it!
Note: This is not an independent analysis. There are many "mathematics sites" which does "similar" analysis.
@Consultants, correct me if I am wrong in my estimates. :P
Why is there a need to be selective?
From the age of 15, I guess there are approximately 3,600 girls I have liked (On average days, I don't see new girls. But going outside, I like about 30 girls. Saying that I go out once every week right …
Source: Puzzle Corner, Australian Mathematical Society
Problem: The king has 500 barrels of wine, but one of them is poisoned. Anyone drinking the poisoned wine will die within 12 hours. The king has four prisoners whom he is willing to sacrifice in order to find the poisoned barrel. Can this be done within 48 hours?
Update (16/03/2011): Solution posted by Tejas Hiremani (IITB EE Alumnus, Goldman Sachs Quant), Siddhant Agarwal (IITB EE Senior Undergraduate), Mehul Tikekar (IITB EE Alumnus, MIT PhD Candidate) and Gaurav Sinha (chera, IITK 1996 Graduate, Indian Revenue Service) in comments!
Problem: A fast food restaurant sells dimsums in boxes of 7 and 3. What’s the greatest number of dimsums a person cannot buy. Generalize it for p and q where p and q are relatively prime.
I loved the puzzle. Hope you enjoy it too.