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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 617 · 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, 79, 5, 20? (a) 43 (b) 79 (c) 5 (d) 20
  2. 2.Which number is the odd one out: 67, 38, 59, 83? (a) 67 (b) 38 (c) 59 (d) 83
  3. 3.Which number is the odd one out: 96, 6, 9, 72? (a) 96 (b) 6 (c) 9 (d) 72
  4. 4.Which number is the odd one out: 3, 73, 33, 8? (a) 3 (b) 73 (c) 33 (d) 8
  5. 5.Which number is the odd one out: 18, 72, 40, 54? (a) 18 (b) 72 (c) 40 (d) 54
  6. 6.Which number is the odd one out: 31, 50, 67, 59? (a) 31 (b) 50 (c) 67 (d) 59
  7. 7.Which number is the odd one out: 16, 64, 4, 23? (a) 16 (b) 64 (c) 4 (d) 23
  8. 8.Which number is the odd one out: 48, 88, 44, 24? (a) 48 (b) 88 (c) 44 (d) 24
  9. 9.Which number is the odd one out: 41, 2, 20, 5? (a) 41 (b) 2 (c) 20 (d) 5
  10. 10.Which number is the odd one out: 26, 71, 61, 19? (a) 26 (b) 71 (c) 61 (d) 19
  11. 11.Which number is the odd one out: 19, 53, 26, 79? (a) 19 (b) 53 (c) 26 (d) 79
  12. 12.Which number is the odd one out: 47, 2, 19, 76? (a) 47 (b) 2 (c) 19 (d) 76
  13. 13.Which number is the odd one out: 42, 11, 37, 17? (a) 42 (b) 11 (c) 37 (d) 17
  14. 14.Which number is the odd one out: 67, 29, 61, 55? (a) 67 (b) 29 (c) 61 (d) 55
  15. 15.Which number is the odd one out: 23, 54, 51, 11? (a) 23 (b) 54 (c) 51 (d) 11
  16. 16.Which number is the odd one out: 19, 67, 93, 97? (a) 19 (b) 67 (c) 93 (d) 97
  17. 17.Which number is the odd one out: 21, 32, 8, 56? (a) 21 (b) 32 (c) 8 (d) 56
  18. 18.Which number is the odd one out: 6, 9, 81, 99? (a) 6 (b) 9 (c) 81 (d) 99
  19. 19.Which number is the odd one out: 52, 89, 71, 31? (a) 52 (b) 89 (c) 71 (d) 31
  20. 20.Which number is the odd one out: 13, 86, 11, 37? (a) 13 (b) 86 (c) 11 (d) 37
  21. 21.Which number is the odd one out: 67, 89, 30, 55? (a) 67 (b) 89 (c) 30 (d) 55
  22. 22.Which number is the odd one out: 63, 14, 81, 98? (a) 63 (b) 14 (c) 81 (d) 98
  23. 23.Which number is the odd one out: 43, 2, 19, 22? (a) 43 (b) 2 (c) 19 (d) 22
  24. 24.Which number is the odd one out: 19, 23, 14, 83? (a) 19 (b) 23 (c) 14 (d) 83
  25. 25.Which number is the odd one out: 37, 92, 47, 67? (a) 37 (b) 92 (c) 47 (d) 67
  26. 26.Which number is the odd one out: 13, 46, 61, 47? (a) 13 (b) 46 (c) 61 (d) 47
  27. 27.Which number is the odd one out: 11, 89, 52, 43? (a) 11 (b) 89 (c) 52 (d) 43
  28. 28.Which number is the odd one out: 66, 77, 91, 98? (a) 66 (b) 77 (c) 91 (d) 98
  29. 29.Which number is the odd one out: 61, 29, 9, 3? (a) 61 (b) 29 (c) 9 (d) 3
  30. 30.Which number is the odd one out: 32, 40, 80, 29? (a) 32 (b) 40 (c) 80 (d) 29
  31. 31.Which number is the odd one out: 7, 48, 96, 84? (a) 7 (b) 48 (c) 96 (d) 84
  32. 32.Which number is the odd one out: 13, 83, 68, 43? (a) 13 (b) 83 (c) 68 (d) 43
  33. 33.Which number is the odd one out: 90, 59, 45, 18? (a) 90 (b) 59 (c) 45 (d) 18
  34. 34.Which number is the odd one out: 67, 19, 85, 37? (a) 67 (b) 19 (c) 85 (d) 37
  35. 35.Which number is the odd one out: 96, 84, 56, 88? (a) 96 (b) 84 (c) 56 (d) 88
  36. 36.Which number is the odd one out: 61, 17, 83, 14? (a) 61 (b) 17 (c) 83 (d) 14
  37. 37.Which number is the odd one out: 92, 43, 47, 59? (a) 92 (b) 43 (c) 47 (d) 59
  38. 38.Which number is the odd one out: 83, 92, 71, 11? (a) 83 (b) 92 (c) 71 (d) 11
  39. 39.Which number is the odd one out: 13, 56, 89, 31? (a) 13 (b) 56 (c) 89 (d) 31
  40. 40.Which number is the odd one out: 65, 96, 18, 72? (a) 65 (b) 96 (c) 18 (d) 72

Answer key

  1. 20
  2. 38
  3. 9
  4. 8
  5. 40
  6. 50
  7. 23
  8. 44
  9. 20
  10. 26
  11. 26
  12. 76
  13. 42
  14. 55
  15. 54
  16. 93
  17. 21
  18. 6
  19. 52
  20. 86
  21. 30
  22. 81
  23. 22
  24. 14
  25. 92
  26. 46
  27. 52
  28. 66
  29. 9
  30. 29
  31. 7
  32. 68
  33. 59
  34. 85
  35. 84
  36. 14
  37. 92
  38. 92
  39. 56
  40. 65

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