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Calendar Worksheet for Maths Olympiad

Maths Olympiad topic 12: Calendar puzzles · Set 156 · 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 16 October is a Friday, what day of the week is 14 November? (a) Friday (b) Monday (c) Saturday (d) Sunday
  2. 2.If 19 November is a Monday, what day of the week is 11 December? (a) Wednesday (b) Monday (c) Thursday (d) Tuesday
  3. 3.If 27 August is a Friday, what day of the week is 8 September? (a) Wednesday (b) Tuesday (c) Thursday (d) Friday
  4. 4.If 8 October is a Sunday, what day of the week is 17 October? (a) Monday (b) Thursday (c) Wednesday (d) Tuesday
  5. 5.If 2 December is a Wednesday, what day of the week is 17 December? (a) Saturday (b) Thursday (c) Friday (d) Wednesday
  6. 6.Today is Wednesday. What day of the week will it be after 77 days? (a) Tuesday (b) Friday (c) Wednesday (d) Thursday
  7. 7.If 9 May is a Saturday, what day of the week is 19 May? (a) Wednesday (b) Tuesday (c) Monday (d) Thursday
  8. 8.If 7 December is a Saturday, what day of the week is 19 December? (a) Friday (b) Wednesday (c) Saturday (d) Thursday
  9. 9.Today is Saturday. What day of the week will it be after 30 days? (a) Monday (b) Wednesday (c) Sunday (d) Tuesday
  10. 10.If 3 July is a Sunday, what day of the week is 14 July? (a) Wednesday (b) Thursday (c) Friday (d) Saturday
  11. 11.Today is Monday. What day of the week will it be after 66 days? (a) Wednesday (b) Thursday (c) Friday (d) Saturday
  12. 12.If 17 January is a Thursday, what day of the week is 14 February? (a) Saturday (b) Friday (c) Thursday (d) Wednesday
  13. 13.If 14 September is a Monday, what day of the week is 15 October? (a) Friday (b) Wednesday (c) Saturday (d) Thursday
  14. 14.If 12 January is a Saturday, what day of the week is 8 February? (a) Saturday (b) Sunday (c) Thursday (d) Friday
  15. 15.If 1 May is a Friday, what day of the week is 12 May? (a) Thursday (b) Wednesday (c) Monday (d) Tuesday
  16. 16.If 25 September is a Tuesday, what day of the week is 4 October? (a) Saturday (b) Thursday (c) Friday (d) Wednesday
  17. 17.If 27 September is a Monday, what day of the week is 1 October? (a) Friday (b) Saturday (c) Thursday (d) Sunday
  18. 18.If 8 January is a Thursday, what day of the week is 23 January? (a) Saturday (b) Thursday (c) Friday (d) Sunday
  19. 19.If 24 April is a Saturday, what day of the week is 12 May? (a) Wednesday (b) Friday (c) Thursday (d) Tuesday
  20. 20.If 20 October is a Friday, what day of the week is 7 November? (a) Monday (b) Thursday (c) Wednesday (d) Tuesday
  21. 21.If 12 July is a Wednesday, what day of the week is 27 July? (a) Wednesday (b) Friday (c) Thursday (d) Saturday
  22. 22.If 6 March is a Tuesday, what day of the week is 20 March? (a) Monday (b) Thursday (c) Tuesday (d) Wednesday
  23. 23.If 15 January is a Thursday, what day of the week is 24 January? (a) Friday (b) Sunday (c) Saturday (d) Monday
  24. 24.If 11 October is a Monday, what day of the week is 24 October? (a) Tuesday (b) Sunday (c) Monday (d) Saturday
  25. 25.Today is Thursday. What day of the week will it be after 54 days? (a) Monday (b) Wednesday (c) Thursday (d) Tuesday
  26. 26.If 3 May is a Monday, what day of the week is 13 May? (a) Friday (b) Saturday (c) Wednesday (d) Thursday
  27. 27.If 4 December is a Wednesday, what day of the week is 20 December? (a) Saturday (b) Sunday (c) Thursday (d) Friday
  28. 28.If 5 October is a Friday, what day of the week is 21 October? (a) Saturday (b) Tuesday (c) Sunday (d) Monday
  29. 29.If 28 May is a Saturday, what day of the week is 17 June? (a) Thursday (b) Saturday (c) Friday (d) Sunday
  30. 30.If 12 January is a Friday, what day of the week is 20 January? (a) Sunday (b) Friday (c) Saturday (d) Monday
  31. 31.If 16 January is a Thursday, what day of the week is 1 February? (a) Friday (b) Monday (c) Sunday (d) Saturday
  32. 32.If 20 August is a Wednesday, what day of the week is 2 September? (a) Wednesday (b) Thursday (c) Monday (d) Tuesday
  33. 33.If 15 October is a Sunday, what day of the week is 3 November? (a) Thursday (b) Sunday (c) Friday (d) Saturday
  34. 34.If 12 March is a Saturday, what day of the week is 12 April? (a) Tuesday (b) Wednesday (c) Monday (d) Thursday
  35. 35.If 16 August is a Tuesday, what day of the week is 14 September? (a) Thursday (b) Friday (c) Wednesday (d) Tuesday
  36. 36.If 15 June is a Friday, what day of the week is 6 July? (a) Sunday (b) Saturday (c) Friday (d) Thursday
  37. 37.If 2 May is a Sunday, what day of the week is 10 May? (a) Wednesday (b) Sunday (c) Monday (d) Tuesday
  38. 38.Today is Monday. What day of the week will it be after 91 days? (a) Monday (b) Tuesday (c) Sunday (d) Wednesday
  39. 39.Today is Wednesday. What day of the week will it be after 41 days? (a) Thursday (b) Wednesday (c) Monday (d) Tuesday
  40. 40.If 28 July is a Monday, what day of the week is 19 August? (a) Tuesday (b) Thursday (c) Monday (d) Wednesday

Answer key

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

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