Top 50 Puzzles — Commonly Asked During The Interview
I am Amit Shekhar, Co-Founder @ Outcome School, a teacher and mentor helping developers learn to code and get high-paying jobs.
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Here, I have listed the top 50 Puzzles asked during the coding interviews in companies like Amazon, Microsoft, Facebook, Adobe, Yahoo, Morgan Stanley, Bloomberg, Nvidia, etc.
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Let’s get started with the puzzles.
- Crossing the bridge
Asked in: Google and Microsoft
2. A fake among 12 coins
Asked in: Microsoft, Bloomberg, Amazon, and Google
3. 2 Eggs and 100 Floor
Asked in: Google, Microsoft, Nvidia, Bloomberg, and Morgan Stanley
4. 100 people in a circle
5. Wolf-Goat-Cabbage
6. Finding Celebrity
Asked in: Facebook, Microsoft, and Yahoo
7. Monkeys and Doors
Asked in: Google, Amazon, Adobe, Oracle, and Microsoft
8. The two water Jug
Asked in: Microsoft, Amazon, Oracle, Bloomberg, and Citrix
9. Chessboard Reassembly
10. Round table coin game
Asked in: Amazon and Microsoft
11. Fake Note
12. Einstein’s puzzle
13. Six-colored cube
14. The Monkey and the Coconut
15. Ants on a Triangle
Asked in: Microsoft, Qualcomm, and Google
16. 3 Mislabeled Jars
Asked in: Microsoft
17. Find the ages of daughters
Asked in: Google
18. Truth and Lie
Asked in: Amazon
19. Prisoners and Poison
Asked in: Amazon
20. Next Number
Asked in: Amazon and Google
21. Spider’s Web
Asked in: Bloomberg
22. Ratio of Boys and Girls
Asked in: Amazon and Google
23. Balls in a bag
24. Maximum number of Kings on a Chessboard
25. Divide the Cake
Asked in: Google
26. Minimum planes to go around the world
Asked in: Microsoft
27. A knight's shortest path
28. Find the rank
29. Counting triangles
30. Questionable tiling
31. The Icosian game
32. Row and Column Exchange
33. Mental Arithmetic
34. The Fox and The Duck
Asked in: Microsoft
35. The Chameleons
36. Crossing the desert
Asked in: Microsoft
37. Monty Hall Problem
Asked in: Amazon
38. Blocked Path
Asked in: Google
39. 5 Pirates and 100 gold coins
Asked in: Microsoft
40. 10 Coins Puzzle
Asked in: Yahoo
41. Magic Square
42. Cutting a Stick
43. 13 Caves and a Thief
Asked in: Google
44. Couples crossing the river
Asked in: Microsoft
45. Gold for 7 days of Work
Asked in: Microsoft
46. Palindrome Counting
47. Coins on a star
48. The Rabbit Problem
49. Find the fastest 3 horses
Asked in: Google, Amazon, and Citrix
50. 100 Prisoners with Red/Black Hats
Asked in: Google and Microsoft
Thanks for reading.
Amit Shekhar
Co-Founder @ Outcome School
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