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These are some of the most famous Interview Puzzles being asked in top tech companies.

Here is a list of Top 25 puzzles which have been asked in top Tech Interview.

1. 2 Eggs and 100 Floor Classic Puzzle
2. Five pirates and gold coin Puzzle
3. Six pirates and Gold Coin puzzle
4. Probability of having boy
5. Random Airplane Seats
6. Inverted playing card puzzle
7. Flipping Coins Puzzle
8. Three hat colors Microsoft Puzzle
9. 25 horses 5 tracks Puzzle
10. Gold Bar Puzzle
11. Crossing the Bridge Puzzle
12. Will you accept the bet?
13. The Puzzle of 100 Hats
14. Man fell in Well Puzzle
15. Minimum Number of Weigths
16. One Bulb with 3 Switches
17. Find the minimum number of aircraft
18. Burning ropes to measure time
19. Connect 3 houses with 3 wells
20. Measure 9 minutes from 2 hourglasses puzzle
21. Ant and Triangle Problem
22. The Man in the Elevator
23. Find the survivor
24. Free the prisoners puzzle
25. GREAT STRATEGY CAN ONLY SAVE LIFE

Specially for Microsoft Interview Puzzles, you may refer,
Top 15 Microsoft Interview Puzzles
Microsoft Interview Puzzles

Other MOST COMMON Interview Puzzles-
Top 25 Tech Interview Logical Puzzles

Each of the puzzles got repeated a number of times in interviews even for top tech companies