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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 760 · 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: 43, 41, 53, 94? (a) 43 (b) 41 (c) 53 (d) 94
  2. 2.Which number is the odd one out: 15, 50, 86, 75? (a) 15 (b) 50 (c) 86 (d) 75
  3. 3.Which number is the odd one out: 67, 21, 7, 73? (a) 67 (b) 21 (c) 7 (d) 73
  4. 4.Which number is the odd one out: 97, 89, 27, 71? (a) 97 (b) 89 (c) 27 (d) 71
  5. 5.Which number is the odd one out: 53, 24, 59, 3? (a) 53 (b) 24 (c) 59 (d) 3
  6. 6.Which number is the odd one out: 83, 17, 67, 10? (a) 83 (b) 17 (c) 67 (d) 10
  7. 7.Which number is the odd one out: 23, 61, 31, 98? (a) 23 (b) 61 (c) 31 (d) 98
  8. 8.Which number is the odd one out: 71, 22, 53, 47? (a) 71 (b) 22 (c) 53 (d) 47
  9. 9.Which number is the odd one out: 81, 8, 9, 16? (a) 81 (b) 8 (c) 9 (d) 16
  10. 10.Which number is the odd one out: 97, 16, 4, 8? (a) 97 (b) 16 (c) 4 (d) 8
  11. 11.Which number is the odd one out: 25, 90, 18, 54? (a) 25 (b) 90 (c) 18 (d) 54
  12. 12.Which number is the odd one out: 64, 81, 16, 27? (a) 64 (b) 81 (c) 16 (d) 27
  13. 13.Which number is the odd one out: 37, 45, 61, 13? (a) 37 (b) 45 (c) 61 (d) 13
  14. 14.Which number is the odd one out: 48, 35, 24, 40? (a) 48 (b) 35 (c) 24 (d) 40
  15. 15.Which number is the odd one out: 17, 77, 13, 61? (a) 17 (b) 77 (c) 13 (d) 61
  16. 16.Which number is the odd one out: 11, 39, 57, 87? (a) 11 (b) 39 (c) 57 (d) 87
  17. 17.Which number is the odd one out: 54, 47, 27, 31? (a) 54 (b) 47 (c) 27 (d) 31
  18. 18.Which number is the odd one out: 2, 83, 13, 72? (a) 2 (b) 83 (c) 13 (d) 72
  19. 19.Which number is the odd one out: 14, 54, 91, 77? (a) 14 (b) 54 (c) 91 (d) 77
  20. 20.Which number is the odd one out: 13, 79, 36, 17? (a) 13 (b) 79 (c) 36 (d) 17
  21. 21.Which number is the odd one out: 23, 58, 53, 43? (a) 23 (b) 58 (c) 53 (d) 43
  22. 22.Which number is the odd one out: 83, 60, 3, 61? (a) 83 (b) 60 (c) 3 (d) 61
  23. 23.Which number is the odd one out: 6, 78, 71, 66? (a) 6 (b) 78 (c) 71 (d) 66
  24. 24.Which number is the odd one out: 78, 48, 96, 11? (a) 78 (b) 48 (c) 96 (d) 11
  25. 25.Which number is the odd one out: 5, 65, 19, 59? (a) 5 (b) 65 (c) 19 (d) 59
  26. 26.Which number is the odd one out: 47, 2, 41, 30? (a) 47 (b) 2 (c) 41 (d) 30
  27. 27.Which number is the odd one out: 53, 80, 8, 40? (a) 53 (b) 80 (c) 8 (d) 40
  28. 28.Which number is the odd one out: 43, 6, 3, 19? (a) 43 (b) 6 (c) 3 (d) 19
  29. 29.Which number is the odd one out: 16, 32, 34, 4? (a) 16 (b) 32 (c) 34 (d) 4
  30. 30.Which number is the odd one out: 2, 68, 23, 61? (a) 2 (b) 68 (c) 23 (d) 61
  31. 31.Which number is the odd one out: 71, 89, 58, 17? (a) 71 (b) 89 (c) 58 (d) 17
  32. 32.Which number is the odd one out: 12, 97, 23, 37? (a) 12 (b) 97 (c) 23 (d) 37
  33. 33.Which number is the odd one out: 53, 29, 37, 81? (a) 53 (b) 29 (c) 37 (d) 81
  34. 34.Which number is the odd one out: 4, 29, 19, 79? (a) 4 (b) 29 (c) 19 (d) 79
  35. 35.Which number is the odd one out: 24, 66, 42, 56? (a) 24 (b) 66 (c) 42 (d) 56
  36. 36.Which number is the odd one out: 49, 10, 55, 70? (a) 49 (b) 10 (c) 55 (d) 70
  37. 37.Which number is the odd one out: 88, 13, 43, 11? (a) 88 (b) 13 (c) 43 (d) 11
  38. 38.Which number is the odd one out: 43, 67, 89, 94? (a) 43 (b) 67 (c) 89 (d) 94
  39. 39.Which number is the odd one out: 57, 30, 97, 19? (a) 57 (b) 30 (c) 97 (d) 19
  40. 40.Which number is the odd one out: 78, 82, 66, 85? (a) 78 (b) 82 (c) 66 (d) 85

Answer key

  1. 94
  2. 86
  3. 21
  4. 27
  5. 24
  6. 10
  7. 98
  8. 22
  9. 8
  10. 97
  11. 25
  12. 27
  13. 45
  14. 35
  15. 77
  16. 11
  17. 54
  18. 72
  19. 54
  20. 36
  21. 58
  22. 60
  23. 71
  24. 11
  25. 65
  26. 30
  27. 53
  28. 6
  29. 34
  30. 68
  31. 58
  32. 12
  33. 81
  34. 4
  35. 56
  36. 49
  37. 88
  38. 94
  39. 30
  40. 85

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