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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 985 · 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: 23, 76, 79, 73? (a) 23 (b) 76 (c) 79 (d) 73
  2. 2.Which number is the odd one out: 17, 61, 8, 67? (a) 17 (b) 61 (c) 8 (d) 67
  3. 3.Which number is the odd one out: 20, 49, 60, 84? (a) 20 (b) 49 (c) 60 (d) 84
  4. 4.Which number is the odd one out: 71, 81, 47, 11? (a) 71 (b) 81 (c) 47 (d) 11
  5. 5.Which number is the odd one out: 67, 79, 68, 2? (a) 67 (b) 79 (c) 68 (d) 2
  6. 6.Which number is the odd one out: 41, 61, 60, 75? (a) 41 (b) 61 (c) 60 (d) 75
  7. 7.Which number is the odd one out: 85, 50, 65, 18? (a) 85 (b) 50 (c) 65 (d) 18
  8. 8.Which number is the odd one out: 68, 88, 48, 96? (a) 68 (b) 88 (c) 48 (d) 96
  9. 9.Which number is the odd one out: 67, 97, 31, 21? (a) 67 (b) 97 (c) 31 (d) 21
  10. 10.Which number is the odd one out: 13, 23, 4, 2? (a) 13 (b) 23 (c) 4 (d) 2
  11. 11.Which number is the odd one out: 4, 79, 43, 11? (a) 4 (b) 79 (c) 43 (d) 11
  12. 12.Which number is the odd one out: 10, 60, 66, 12? (a) 10 (b) 60 (c) 66 (d) 12
  13. 13.Which number is the odd one out: 89, 83, 2, 24? (a) 89 (b) 83 (c) 2 (d) 24
  14. 14.Which number is the odd one out: 53, 31, 59, 44? (a) 53 (b) 31 (c) 59 (d) 44
  15. 15.Which number is the odd one out: 50, 59, 5, 89? (a) 50 (b) 59 (c) 5 (d) 89
  16. 16.Which number is the odd one out: 96, 31, 47, 97? (a) 96 (b) 31 (c) 47 (d) 97
  17. 17.Which number is the odd one out: 96, 87, 24, 48? (a) 96 (b) 87 (c) 24 (d) 48
  18. 18.Which number is the odd one out: 87, 3, 89, 43? (a) 87 (b) 3 (c) 89 (d) 43
  19. 19.Which number is the odd one out: 30, 18, 7, 90? (a) 30 (b) 18 (c) 7 (d) 90
  20. 20.Which number is the odd one out: 53, 8, 46, 32? (a) 53 (b) 8 (c) 46 (d) 32
  21. 21.Which number is the odd one out: 53, 67, 91, 43? (a) 53 (b) 67 (c) 91 (d) 43
  22. 22.Which number is the odd one out: 30, 65, 19, 13? (a) 30 (b) 65 (c) 19 (d) 13
  23. 23.Which number is the odd one out: 87, 83, 89, 66? (a) 87 (b) 83 (c) 89 (d) 66
  24. 24.Which number is the odd one out: 41, 29, 18, 73? (a) 41 (b) 29 (c) 18 (d) 73
  25. 25.Which number is the odd one out: 99, 96, 24, 48? (a) 99 (b) 96 (c) 24 (d) 48
  26. 26.Which number is the odd one out: 46, 38, 86, 93? (a) 46 (b) 38 (c) 86 (d) 93
  27. 27.Which number is the odd one out: 37, 85, 5, 64? (a) 37 (b) 85 (c) 5 (d) 64
  28. 28.Which number is the odd one out: 31, 97, 96, 71? (a) 31 (b) 97 (c) 96 (d) 71
  29. 29.Which number is the odd one out: 19, 4, 89, 47? (a) 19 (b) 4 (c) 89 (d) 47
  30. 30.Which number is the odd one out: 54, 42, 18, 56? (a) 54 (b) 42 (c) 18 (d) 56
  31. 31.Which number is the odd one out: 79, 29, 83, 98? (a) 79 (b) 29 (c) 83 (d) 98
  32. 32.Which number is the odd one out: 86, 22, 26, 9? (a) 86 (b) 22 (c) 26 (d) 9
  33. 33.Which number is the odd one out: 2, 17, 82, 23? (a) 2 (b) 17 (c) 82 (d) 23
  34. 34.Which number is the odd one out: 82, 71, 29, 17? (a) 82 (b) 71 (c) 29 (d) 17
  35. 35.Which number is the odd one out: 18, 72, 16, 78? (a) 18 (b) 72 (c) 16 (d) 78
  36. 36.Which number is the odd one out: 62, 37, 89, 11? (a) 62 (b) 37 (c) 89 (d) 11
  37. 37.Which number is the odd one out: 2, 29, 80, 79? (a) 2 (b) 29 (c) 80 (d) 79
  38. 38.Which number is the odd one out: 97, 27, 83, 67? (a) 97 (b) 27 (c) 83 (d) 67
  39. 39.Which number is the odd one out: 8, 24, 34, 48? (a) 8 (b) 24 (c) 34 (d) 48
  40. 40.Which number is the odd one out: 87, 17, 59, 29? (a) 87 (b) 17 (c) 59 (d) 29

Answer key

  1. 76
  2. 8
  3. 49
  4. 81
  5. 68
  6. 60
  7. 18
  8. 68
  9. 21
  10. 4
  11. 4
  12. 10
  13. 24
  14. 44
  15. 50
  16. 96
  17. 87
  18. 87
  19. 7
  20. 53
  21. 91
  22. 30
  23. 66
  24. 18
  25. 99
  26. 93
  27. 64
  28. 96
  29. 4
  30. 56
  31. 98
  32. 9
  33. 82
  34. 82
  35. 16
  36. 62
  37. 80
  38. 27
  39. 34
  40. 87

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