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Calendar Worksheet for Maths Olympiad

Maths Olympiad topic 12: Calendar puzzles · Set 348 · 40 questions
TalentJR

How to solve it (Throw away the weeks): Count the days between the two dates (use the month lengths: 30 or 31, February 28 in an ordinary year). Divide by 7: whole weeks do not change the day; the remainder does. Count the remainder on from the starting day.

NameDateTime takenScore ___ / 40
  1. 1.If 18 November is a Thursday, what day of the week is 15 December? (a) Friday (b) Tuesday (c) Wednesday (d) Thursday
  2. 2.If 11 January is a Monday, what day of the week is 1 February? (a) Tuesday (b) Sunday (c) Wednesday (d) Monday
  3. 3.If 23 September is a Tuesday, what day of the week is 13 October? (a) Sunday (b) Wednesday (c) Monday (d) Tuesday
  4. 4.Today is Friday. What day of the week will it be after 11 days? (a) Wednesday (b) Monday (c) Tuesday (d) Thursday
  5. 5.If 27 April is a Monday, what day of the week is 4 May? (a) Tuesday (b) Wednesday (c) Monday (d) Sunday
  6. 6.If 13 December is a Thursday, what day of the week is 23 December? (a) Saturday (b) Sunday (c) Monday (d) Tuesday
  7. 7.Today is Saturday. What day of the week will it be after 36 days? (a) Sunday (b) Tuesday (c) Saturday (d) Monday
  8. 8.If 4 October is a Saturday, what day of the week is 17 October? (a) Thursday (b) Sunday (c) Friday (d) Saturday
  9. 9.Today is Sunday. What day of the week will it be after 91 days? (a) Saturday (b) Sunday (c) Monday (d) Tuesday
  10. 10.Today is Saturday. What day of the week will it be after 39 days? (a) Tuesday (b) Friday (c) Thursday (d) Wednesday
  11. 11.If 14 October is a Friday, what day of the week is 24 October? (a) Tuesday (b) Sunday (c) Wednesday (d) Monday
  12. 12.If 2 January is a Wednesday, what day of the week is 18 January? (a) Friday (b) Sunday (c) Thursday (d) Saturday
  13. 13.If 11 April is a Saturday, what day of the week is 15 May? (a) Friday (b) Saturday (c) Sunday (d) Thursday
  14. 14.If 28 May is a Monday, what day of the week is 8 June? (a) Saturday (b) Sunday (c) Thursday (d) Friday
  15. 15.If 3 January is a Wednesday, what day of the week is 17 January? (a) Wednesday (b) Tuesday (c) Friday (d) Thursday
  16. 16.If 23 March is a Monday, what day of the week is 10 April? (a) Thursday (b) Friday (c) Sunday (d) Saturday
  17. 17.If 9 October is a Tuesday, what day of the week is 19 October? (a) Thursday (b) Saturday (c) Sunday (d) Friday
  18. 18.Today is Tuesday. What day of the week will it be after 20 days? (a) Monday (b) Sunday (c) Wednesday (d) Tuesday
  19. 19.If 16 July is a Monday, what day of the week is 20 August? (a) Monday (b) Wednesday (c) Tuesday (d) Sunday
  20. 20.If 2 October is a Saturday, what day of the week is 15 October? (a) Sunday (b) Friday (c) Saturday (d) Thursday
  21. 21.If 6 January is a Wednesday, what day of the week is 17 January? (a) Sunday (b) Tuesday (c) Saturday (d) Monday
  22. 22.If 10 September is a Saturday, what day of the week is 4 October? (a) Thursday (b) Monday (c) Wednesday (d) Tuesday
  23. 23.If 19 October is a Friday, what day of the week is 6 November? (a) Wednesday (b) Thursday (c) Tuesday (d) Monday
  24. 24.Today is Sunday. What day of the week will it be after 25 days? (a) Friday (b) Wednesday (c) Saturday (d) Thursday
  25. 25.Today is Sunday. What day of the week will it be after 39 days? (a) Thursday (b) Friday (c) Saturday (d) Wednesday
  26. 26.If 21 March is a Thursday, what day of the week is 6 April? (a) Friday (b) Saturday (c) Sunday (d) Monday
  27. 27.If 1 October is a Tuesday, what day of the week is 10 October? (a) Friday (b) Thursday (c) Wednesday (d) Saturday
  28. 28.If 6 May is a Friday, what day of the week is 17 May? (a) Thursday (b) Monday (c) Wednesday (d) Tuesday
  29. 29.If 13 October is a Tuesday, what day of the week is 21 October? (a) Thursday (b) Friday (c) Tuesday (d) Wednesday
  30. 30.If 3 January is a Sunday, what day of the week is 15 January? (a) Sunday (b) Friday (c) Thursday (d) Saturday
  31. 31.If 11 December is a Friday, what day of the week is 24 December? (a) Friday (b) Wednesday (c) Thursday (d) Saturday
  32. 32.If 8 October is a Wednesday, what day of the week is 21 October? (a) Tuesday (b) Monday (c) Thursday (d) Wednesday
  33. 33.Today is Thursday. What day of the week will it be after 66 days? (a) Monday (b) Saturday (c) Sunday (d) Tuesday
  34. 34.If 14 July is a Saturday, what day of the week is 6 August? (a) Monday (b) Wednesday (c) Sunday (d) Tuesday
  35. 35.Today is Saturday. What day of the week will it be after 40 days? (a) Friday (b) Saturday (c) Thursday (d) Wednesday
  36. 36.If 14 January is a Sunday, what day of the week is 25 January? (a) Friday (b) Wednesday (c) Thursday (d) Saturday
  37. 37.If 15 August is a Sunday, what day of the week is 29 August? (a) Saturday (b) Sunday (c) Tuesday (d) Monday
  38. 38.Today is Wednesday. What day of the week will it be after 85 days? (a) Friday (b) Saturday (c) Thursday (d) Wednesday
  39. 39.If 17 September is a Wednesday, what day of the week is 20 October? (a) Tuesday (b) Wednesday (c) Sunday (d) Monday
  40. 40.Today is Sunday. What day of the week will it be after 61 days? (a) Saturday (b) Sunday (c) Friday (d) Thursday

Answer key

  1. Wednesday
  2. Monday
  3. Monday
  4. Tuesday
  5. Monday
  6. Sunday
  7. Sunday
  8. Friday
  9. Sunday
  10. Wednesday
  11. Monday
  12. Friday
  13. Friday
  14. Friday
  15. Wednesday
  16. Friday
  17. Friday
  18. Monday
  19. Monday
  20. Friday
  21. Sunday
  22. Tuesday
  23. Tuesday
  24. Thursday
  25. Thursday
  26. Saturday
  27. Thursday
  28. Tuesday
  29. Wednesday
  30. Friday
  31. Thursday
  32. Tuesday
  33. Sunday
  34. Monday
  35. Thursday
  36. Thursday
  37. Sunday
  38. Thursday
  39. Monday
  40. Friday

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