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Number Series Worksheet for Maths Olympiad

Maths Olympiad topic 2: Number patterns: what comes next? · Set 904 · 40 questions
TalentJR

How to solve it (Look at the gaps): Look at two numbers side by side and find the jump: 5 → 10 is a jump of +5. Is the jump the same every time? Then add the same jump once more to the last number. Going down? Take away the same jump. Harder patterns: the jump can grow (+2, +3, +4 …) or the numbers can double (2, 4, 8, 16 …).

NameDateTime takenScore ___ / 40
  1. 1.What comes next? 4, 8, 16, 32, 64, ? (a) 96 (b) 160 (c) 129 (d) 128
  2. 2.What comes next? 3, 11, 19, 27, 35, ? (a) 51 (b) 43 (c) 44 (d) 42
  3. 3.What comes next? 46, 37, 28, 19, 10, ? (a) 2 (b) 4 (c) 3 (d) 1
  4. 4.What comes next? 39, 36, 33, 30, 27, ? (a) 24 (b) 23 (c) 25 (d) 21
  5. 5.What comes next? 2, 6, 18, 54, ? (a) 90 (b) 144 (c) 180 (d) 162
  6. 6.What comes next? 34, 29, 24, 19, 14, ? (a) 4 (b) 8 (c) 9 (d) 10
  7. 7.What comes next? 3, 5, 8, 12, 17, ? (a) 25 (b) 22 (c) 24 (d) 23
  8. 8.What comes next? 1, 3, 9, 27, ? (a) 45 (b) 72 (c) 90 (d) 81
  9. 9.What comes next? 34, 30, 26, 22, 18, ? (a) 14 (b) 15 (c) 10 (d) 13
  10. 10.What comes next? 37, 30, 23, 16, 9, ? (a) 4 (b) 1 (c) 2 (d) 3
  11. 11.What comes next? 43, 37, 31, 25, 19, ? (a) 12 (b) 7 (c) 14 (d) 13
  12. 12.What comes next? 24, 26, 28, 30, 32, ? (a) 33 (b) 36 (c) 34 (d) 35
  13. 13.What comes next? 30, 39, 48, 57, 66, ? (a) 76 (b) 74 (c) 84 (d) 75
  14. 14.What comes next? 46, 38, 30, 22, 14, ? (a) 6 (b) 8 (c) 5 (d) 7
  15. 15.What comes next? 15, 18, 21, 24, 27, ? (a) 30 (b) 31 (c) 29 (d) 33
  16. 16.What comes next? 4, 7, 10, 13, 16, ? (a) 22 (b) 20 (c) 18 (d) 19
  17. 17.What comes next? 65, 56, 47, 38, 29, ? (a) 19 (b) 11 (c) 20 (d) 21
  18. 18.What comes next? 25, 32, 39, 46, 53, ? (a) 59 (b) 67 (c) 61 (d) 60
  19. 19.What comes next? 22, 34, 46, 58, 70, ? (a) 82 (b) 94 (c) 81 (d) 83
  20. 20.What comes next? 3, 6, 12, 24, 48, ? (a) 97 (b) 120 (c) 96 (d) 72
  21. 21.What comes next? 20, 24, 28, 32, 36, ? (a) 40 (b) 44 (c) 39 (d) 41
  22. 22.What comes next? 16, 20, 24, 28, 32, ? (a) 37 (b) 35 (c) 40 (d) 36
  23. 23.What comes next? 3, 6, 9, 12, 15, ? (a) 17 (b) 19 (c) 21 (d) 18
  24. 24.What comes next? 26, 30, 34, 38, 42, ? (a) 47 (b) 46 (c) 45 (d) 50
  25. 25.What comes next? 19, 22, 25, 28, 31, ? (a) 34 (b) 35 (c) 37 (d) 33
  26. 26.What comes next? 15, 13, 11, 9, 7, ? (a) 4 (b) 3 (c) 5 (d) 6
  27. 27.What comes next? 4, 11, 8, 15, 12, 19, ? (a) 22 (b) 16 (c) 26 (d) 15
  28. 28.What comes next? 17, 21, 26, 32, 39, ? (a) 49 (b) 47 (c) 46 (d) 48
  29. 29.What comes next? 5, 10, 20, 40, 80, ? (a) 120 (b) 160 (c) 161 (d) 200
  30. 30.What comes next? 11, 14, 18, 23, 29, ? (a) 35 (b) 38 (c) 37 (d) 36
  31. 31.What comes next? 7, 9, 11, 13, 15, ? (a) 16 (b) 19 (c) 18 (d) 17
  32. 32.What comes next? 3, 9, 27, 81, ? (a) 270 (b) 135 (c) 216 (d) 243
  33. 33.What comes next? 1, 2, 4, 8, 16, ? (a) 24 (b) 40 (c) 32 (d) 33
  34. 34.What comes next? 14, 26, 38, 50, 62, ? (a) 86 (b) 74 (c) 75 (d) 73
  35. 35.What comes next? 54, 45, 36, 27, 18, ? (a) 11 (b) 9 (c) 8 (d) 10
  36. 36.What comes next? 31, 25, 19, 13, 7, ? (a) 2 (b) 1 (c) 4 (d) 3
  37. 37.What comes next? 50, 41, 32, 23, 14, ? (a) 5 (b) 7 (c) 4 (d) 6
  38. 38.What comes next? 42, 34, 26, 18, 10, ? (a) 1 (b) 2 (c) 4 (d) 3
  39. 39.What comes next? 12, 19, 17, 24, 22, 29, ? (a) 26 (b) 27 (c) 31 (d) 36
  40. 40.What comes next? 20, 21, 23, 26, 30, ? (a) 34 (b) 37 (c) 35 (d) 36

Answer key

  1. 128
  2. 43
  3. 1
  4. 24
  5. 162
  6. 9
  7. 23
  8. 81
  9. 14
  10. 2
  11. 13
  12. 34
  13. 75
  14. 6
  15. 30
  16. 19
  17. 20
  18. 60
  19. 82
  20. 96
  21. 40
  22. 36
  23. 18
  24. 46
  25. 34
  26. 5
  27. 16
  28. 47
  29. 160
  30. 36
  31. 17
  32. 243
  33. 32
  34. 74
  35. 9
  36. 1
  37. 5
  38. 2
  39. 27
  40. 35

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