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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 675 · 40 questions
TalentJR

How to think it through (Test every number): Check each number for a property: even/odd, prime (only two factors), square (4, 9, 16 …), or a multiple of 3, 4, 5 … 9. Find the property that three numbers share and one does not. Make sure no other property points at a different number — then that one is the odd one out.

NameDateTime takenScore ___ / 40
  1. 1.Which number is the odd one out: 24, 8, 32, 12? (a) 24 (b) 8 (c) 32 (d) 12
  2. 2.Which number is the odd one out: 27, 64, 81, 16? (a) 27 (b) 64 (c) 81 (d) 16
  3. 3.Which number is the odd one out: 61, 17, 83, 65? (a) 61 (b) 17 (c) 83 (d) 65
  4. 4.Which number is the odd one out: 23, 71, 65, 5? (a) 23 (b) 71 (c) 65 (d) 5
  5. 5.Which number is the odd one out: 30, 19, 78, 10? (a) 30 (b) 19 (c) 78 (d) 10
  6. 6.Which number is the odd one out: 69, 70, 14, 35? (a) 69 (b) 70 (c) 14 (d) 35
  7. 7.Which number is the odd one out: 75, 10, 85, 12? (a) 75 (b) 10 (c) 85 (d) 12
  8. 8.Which number is the odd one out: 99, 11, 3, 47? (a) 99 (b) 11 (c) 3 (d) 47
  9. 9.Which number is the odd one out: 40, 97, 13, 23? (a) 40 (b) 97 (c) 13 (d) 23
  10. 10.Which number is the odd one out: 83, 17, 85, 13? (a) 83 (b) 17 (c) 85 (d) 13
  11. 11.Which number is the odd one out: 42, 14, 8, 84? (a) 42 (b) 14 (c) 8 (d) 84
  12. 12.Which number is the odd one out: 24, 48, 88, 73? (a) 24 (b) 48 (c) 88 (d) 73
  13. 13.Which number is the odd one out: 75, 40, 28, 56? (a) 75 (b) 40 (c) 28 (d) 56
  14. 14.Which number is the odd one out: 59, 30, 43, 89? (a) 59 (b) 30 (c) 43 (d) 89
  15. 15.Which number is the odd one out: 16, 65, 88, 64? (a) 16 (b) 65 (c) 88 (d) 64
  16. 16.Which number is the odd one out: 67, 84, 31, 11? (a) 67 (b) 84 (c) 31 (d) 11
  17. 17.Which number is the odd one out: 18, 37, 47, 83? (a) 18 (b) 37 (c) 47 (d) 83
  18. 18.Which number is the odd one out: 45, 23, 3, 37? (a) 45 (b) 23 (c) 3 (d) 37
  19. 19.Which number is the odd one out: 15, 16, 64, 8? (a) 15 (b) 16 (c) 64 (d) 8
  20. 20.Which number is the odd one out: 17, 73, 3, 57? (a) 17 (b) 73 (c) 3 (d) 57
  21. 21.Which number is the odd one out: 25, 61, 47, 29? (a) 25 (b) 61 (c) 47 (d) 29
  22. 22.Which number is the odd one out: 70, 11, 23, 13? (a) 70 (b) 11 (c) 23 (d) 13
  23. 23.Which number is the odd one out: 31, 84, 2, 79? (a) 31 (b) 84 (c) 2 (d) 79
  24. 24.Which number is the odd one out: 52, 90, 8, 40? (a) 52 (b) 90 (c) 8 (d) 40
  25. 25.Which number is the odd one out: 82, 41, 23, 11? (a) 82 (b) 41 (c) 23 (d) 11
  26. 26.Which number is the odd one out: 2, 97, 12, 11? (a) 2 (b) 97 (c) 12 (d) 11
  27. 27.Which number is the odd one out: 32, 28, 38, 56? (a) 32 (b) 28 (c) 38 (d) 56
  28. 28.Which number is the odd one out: 79, 13, 29, 81? (a) 79 (b) 13 (c) 29 (d) 81
  29. 29.Which number is the odd one out: 48, 60, 24, 15? (a) 48 (b) 60 (c) 24 (d) 15
  30. 30.Which number is the odd one out: 20, 92, 90, 52? (a) 20 (b) 92 (c) 90 (d) 52
  31. 31.Which number is the odd one out: 4, 19, 13, 17? (a) 4 (b) 19 (c) 13 (d) 17
  32. 32.Which number is the odd one out: 88, 40, 80, 31? (a) 88 (b) 40 (c) 80 (d) 31
  33. 33.Which number is the odd one out: 75, 39, 4, 15? (a) 75 (b) 39 (c) 4 (d) 15
  34. 34.Which number is the odd one out: 40, 28, 80, 77? (a) 40 (b) 28 (c) 80 (d) 77
  35. 35.Which number is the odd one out: 53, 79, 41, 22? (a) 53 (b) 79 (c) 41 (d) 22
  36. 36.Which number is the odd one out: 18, 66, 27, 99? (a) 18 (b) 66 (c) 27 (d) 99
  37. 37.Which number is the odd one out: 25, 45, 99, 81? (a) 25 (b) 45 (c) 99 (d) 81
  38. 38.Which number is the odd one out: 19, 42, 89, 11? (a) 19 (b) 42 (c) 89 (d) 11
  39. 39.Which number is the odd one out: 9, 49, 99, 63? (a) 9 (b) 49 (c) 99 (d) 63
  40. 40.Which number is the odd one out: 78, 13, 19, 79? (a) 78 (b) 13 (c) 19 (d) 79

Answer key

  1. 12
  2. 27
  3. 65
  4. 65
  5. 19
  6. 69
  7. 12
  8. 99
  9. 40
  10. 85
  11. 8
  12. 73
  13. 75
  14. 30
  15. 65
  16. 84
  17. 18
  18. 45
  19. 15
  20. 57
  21. 25
  22. 70
  23. 84
  24. 90
  25. 82
  26. 12
  27. 38
  28. 81
  29. 15
  30. 90
  31. 4
  32. 31
  33. 4
  34. 77
  35. 22
  36. 66
  37. 25
  38. 42
  39. 49
  40. 78

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