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Interview prep / Brainteaser/Logic

Brainteaser/Logic interview questions: page 5 of 7

Questions 201–250

  1. Fourth powers from a given sum and productEasy
  2. Smallest pair making a squared plus ab plus b squared squareMedium
  3. Bounces among two opposing ant coloniesEasy
  4. Error propagation in a Fibonacci calculationMedium
  5. Odd bean among 90 of unknown directionHard
  6. Ladle size that halves wine in two drawsEasy
  7. Father's age from nine evenly spaced childrenHard
  8. Infinite power tower equal to twoEasy
  9. Total of the first fifty positive integersEasy
  10. Age from the fractions of a lifeEasy
  11. Smallest square that is a sum of powersHard
  12. Doubling average speed over two one-mile lapsEasy
  13. Weekday 100 days after a MondayEasy
  14. One quart in each of a 7 and a 5 quart jugMedium
  15. Five tasters, three months of poison testingHard
  16. Trailing zeros of 100 factorialEasy
  17. Bulbs left on after 100 rounds of togglingMedium
  18. Juice and water swapped back and forthMedium
  19. Lighting two candles so one is twice the otherEasy
  20. Maximum sum of pairwise coprime numbers up to 30Hard
  21. Colour-pair card game with a 10 dollar prizeEasy
  22. Two pints from 7 and 11 pint jugsMedium
  23. Expected value of a random number of ones and ninesMedium
  24. Top three of 25 horses with five-lane racesMedium
  25. Cats sharing 999919 mice equallyHard
  26. Fly shuttling between cars 400 miles apartMedium
  27. Splitting a 75 million fund across five asset classesEasy
  28. Number of topping combinations from ten toppingsEasy
  29. Unpainted unit cubes inside a dipped 10-cubeEasy
  30. Timing 45 minutes with two uneven fusesEasy
  31. Hauling 3000 apples past a hungry driverMedium
  32. Comparing glass sizes after pouring waterEasy
  33. 3x3 grid of 1 to 9 with all lines evenEasy
  34. Race to call 50 adding one to ten each turnEasy
  35. Halving card piles game with a 1000-sided dieMedium
  36. Finding the heavy coin among nine in two weighingsEasy
  37. Splitting blind coins into piles with equal headsEasy
  38. Timing nine minutes with 4- and 7-minute sand timersEasy
  39. Who wins the take-1-to-3 game from 1000 stonesEasy
  40. Grilling four steaks on a three-steak grillEasy
  41. Prisoners and a glass that can be flippedEasy
  42. Toggled switches after 100 passesEasy
  43. Maximising the product of stack sizes from 100 coinsEasy
  44. Ferrying a fox, a hen and grain across a riverEasy
  45. Fitting new guests into a full infinite hotelEasy
  46. One question to find the right road from two dwarfsEasy
  47. Fair split of 8 dollars for shared wheatEasy
  48. Fewest saw cuts to dice a 4x4x4 blockEasy
  49. Counting a group from not-favourite colour totalsEasy
  50. Will rational tigers eat the lone sheepEasy