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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 690 · 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: 11, 56, 2, 79? (a) 11 (b) 56 (c) 2 (d) 79
  2. 2.Which number is the odd one out: 45, 43, 18, 90? (a) 45 (b) 43 (c) 18 (d) 90
  3. 3.Which number is the odd one out: 17, 45, 41, 59? (a) 17 (b) 45 (c) 41 (d) 59
  4. 4.Which number is the odd one out: 71, 19, 97, 6? (a) 71 (b) 19 (c) 97 (d) 6
  5. 5.Which number is the odd one out: 14, 43, 23, 37? (a) 14 (b) 43 (c) 23 (d) 37
  6. 6.Which number is the odd one out: 75, 59, 61, 73? (a) 75 (b) 59 (c) 61 (d) 73
  7. 7.Which number is the odd one out: 16, 67, 64, 8? (a) 16 (b) 67 (c) 64 (d) 8
  8. 8.Which number is the odd one out: 83, 79, 46, 43? (a) 83 (b) 79 (c) 46 (d) 43
  9. 9.Which number is the odd one out: 27, 53, 43, 89? (a) 27 (b) 53 (c) 43 (d) 89
  10. 10.Which number is the odd one out: 12, 32, 48, 85? (a) 12 (b) 32 (c) 48 (d) 85
  11. 11.Which number is the odd one out: 47, 53, 68, 79? (a) 47 (b) 53 (c) 68 (d) 79
  12. 12.Which number is the odd one out: 67, 59, 28, 53? (a) 67 (b) 59 (c) 28 (d) 53
  13. 13.Which number is the odd one out: 3, 50, 19, 51? (a) 3 (b) 50 (c) 19 (d) 51
  14. 14.Which number is the odd one out: 37, 97, 96, 13? (a) 37 (b) 97 (c) 96 (d) 13
  15. 15.Which number is the odd one out: 23, 89, 79, 24? (a) 23 (b) 89 (c) 79 (d) 24
  16. 16.Which number is the odd one out: 24, 50, 78, 96? (a) 24 (b) 50 (c) 78 (d) 96
  17. 17.Which number is the odd one out: 84, 50, 48, 56? (a) 84 (b) 50 (c) 48 (d) 56
  18. 18.Which number is the odd one out: 29, 61, 11, 16? (a) 29 (b) 61 (c) 11 (d) 16
  19. 19.Which number is the odd one out: 97, 73, 13, 74? (a) 97 (b) 73 (c) 13 (d) 74
  20. 20.Which number is the odd one out: 64, 82, 16, 88? (a) 64 (b) 82 (c) 16 (d) 88
  21. 21.Which number is the odd one out: 90, 29, 97, 75? (a) 90 (b) 29 (c) 97 (d) 75
  22. 22.Which number is the odd one out: 36, 13, 29, 23? (a) 36 (b) 13 (c) 29 (d) 23
  23. 23.Which number is the odd one out: 43, 71, 97, 30? (a) 43 (b) 71 (c) 97 (d) 30
  24. 24.Which number is the odd one out: 73, 43, 53, 8? (a) 73 (b) 43 (c) 53 (d) 8
  25. 25.Which number is the odd one out: 91, 19, 59, 61? (a) 91 (b) 19 (c) 59 (d) 61
  26. 26.Which number is the odd one out: 40, 80, 32, 19? (a) 40 (b) 80 (c) 32 (d) 19
  27. 27.Which number is the odd one out: 29, 96, 88, 48? (a) 29 (b) 96 (c) 88 (d) 48
  28. 28.Which number is the odd one out: 89, 73, 36, 61? (a) 89 (b) 73 (c) 36 (d) 61
  29. 29.Which number is the odd one out: 6, 48, 58, 24? (a) 6 (b) 48 (c) 58 (d) 24
  30. 30.Which number is the odd one out: 41, 78, 97, 23? (a) 41 (b) 78 (c) 97 (d) 23
  31. 31.Which number is the odd one out: 83, 16, 41, 89? (a) 83 (b) 16 (c) 41 (d) 89
  32. 32.Which number is the odd one out: 61, 23, 80, 53? (a) 61 (b) 23 (c) 80 (d) 53
  33. 33.Which number is the odd one out: 12, 98, 91, 21? (a) 12 (b) 98 (c) 91 (d) 21
  34. 34.Which number is the odd one out: 16, 43, 67, 23? (a) 16 (b) 43 (c) 67 (d) 23
  35. 35.Which number is the odd one out: 81, 48, 96, 24? (a) 81 (b) 48 (c) 96 (d) 24
  36. 36.Which number is the odd one out: 29, 25, 19, 79? (a) 29 (b) 25 (c) 19 (d) 79
  37. 37.Which number is the odd one out: 83, 31, 39, 79? (a) 83 (b) 31 (c) 39 (d) 79
  38. 38.Which number is the odd one out: 59, 3, 17, 54? (a) 59 (b) 3 (c) 17 (d) 54
  39. 39.Which number is the odd one out: 40, 31, 19, 43? (a) 40 (b) 31 (c) 19 (d) 43
  40. 40.Which number is the odd one out: 53, 61, 47, 81? (a) 53 (b) 61 (c) 47 (d) 81

Answer key

  1. 56
  2. 43
  3. 45
  4. 6
  5. 14
  6. 75
  7. 67
  8. 46
  9. 27
  10. 85
  11. 68
  12. 28
  13. 50
  14. 96
  15. 24
  16. 50
  17. 50
  18. 16
  19. 74
  20. 82
  21. 90
  22. 36
  23. 30
  24. 8
  25. 91
  26. 19
  27. 29
  28. 36
  29. 58
  30. 78
  31. 16
  32. 80
  33. 12
  34. 16
  35. 81
  36. 25
  37. 39
  38. 54
  39. 40
  40. 81

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