Yahoo Interview Puzzles

Heavy and Light Balls Puzzle

Puzzle: You have 2 ball of each A,B,C colors and each color have 1 light and 1 heavy ball. All light balls are of same weight same goes for heavy. Find out weight type of each ball in minimum chances. You can use a two sided balance system (not the electronic one). This puzzle was Read More →

Prisoner and two Doors Puzzle


Problem: Court takes decision to relax the sentence given to criminal if he can solve a puzzle. Criminal has to take decision to open one of the doors. Behind each door is either a lady or a tiger. They may be both tigers, both ladies or one of each. If the criminal opens a door Read More →

Sand Timer Puzzle

Sand timer

This Puzzle is one of the most commonly asked interview puzzle. Problem: You have two sand timers with you. One can measure 7 minutes and the other sand timer can measure 11 minutes. This means that it takes 7 minutes for the sand timer to completely empty the sand from one portion to the other. Read More →

2 Eggs 100 Floors Puzzle

Tech interview puzzle, brain teasers, riddles

Problem: You are given 2 eggs. You have access to a 100-storey building. Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100 th floor.Both eggs are identical. You need to figure out the highest floor of a Read More →