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Interview prep / Brainteaser/Logic

Brainteaser/Logic interview questions: page 6 of 7

Questions 251–300

  1. Sending a document with two padlocks and an insecure courierEasy
  2. Survivor when every second person in a circle of 100 fallsMedium
  3. Starting points for a south-east-north walk loopEasy
  4. One question to two door guards, liar and truth tellerEasy
  5. Pricing a card game won only if reds surviveEasy
  6. Top two seeds meeting in a 128-player knockout finalEasy
  7. Weighings to find one heavy bean among eighteenEasy
  8. Number leaving remainder n-1 on division by each nMedium
  9. Bank teller swaps dollars and cents on a chequeEasy
  10. Most sides a cube's shadow can haveEasy
  11. Cost of a garden plot with sides 55, 62 and 117Easy
  12. Two bells chiming five and four times a minuteEasy
  13. Clock face broken into three equal-sum piecesEasy
  14. Unit cubes in the shell of a 10-cubeEasy
  15. When the clock hands first meet after threeEasy
  16. Blind draws to guarantee a matching pair of socksEasy
  17. Counting game where the first to reach 50 winsEasy
  18. Cheapest way to find an odd coin among ninetyHard
  19. Climbing snail on a ten-foot postEasy
  20. Blind man deduces his hat after two sighted men failMedium
  21. Fly shuttling between two approaching bikersEasy
  22. Village wives and the public infidelity announcementHard
  23. Escaping a circular field guarded by a fast dogHard
  24. Ages with product 36 and a unique eldestEasy
  25. Dominoes on a board missing opposite cornersEasy
  26. Measuring 45 seconds with two irregular fusesEasy
  27. Where a mile south, east, north walk closes upMedium
  28. Finding the light bag of coins in one weighingEasy
  29. Paying daily wages from a seven-segment gold barEasy
  30. Why mirrors seem to swap left and right onlyEasy
  31. Six-way split of a bill plus 20 percent tipEasy
  32. Large pizza versus medium plus small without a rulerHard
  33. Guaranteed hit on a submarine with unknown start and speedHard
  34. Making two identical robots meet on a lineHard
  35. Cubing fifteen in your headEasy
  36. Unit cubes touched by paint on a 4-cubeEasy
  37. Second-lap speed for a 60 mph averageEasy
  38. Snapping a chocolate bar into single squaresEasy
  39. Two drinkers alternately taking half the glassEasy
  40. Smallest set reaching 1 to 40 by adding and subtractingMedium
  41. Which cards test a vowel-even ruleEasy
  42. Two weighings to isolate the heavier of nine marblesEasy
  43. Rational lions and a piece of meatMedium
  44. Water level after an anchor goes overboardEasy
  45. Island logicians and a public eye-colour remarkHard
  46. One cut halving a rectangle with a rectangular holeEasy
  47. Take 1 to 3 matches where the last one losesEasy
  48. Winning a coin-placing game on a round tableMedium
  49. Estimating the number of filling stations nationallyEasy
  50. Estimating piano tuners in a university townEasy