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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 236 · 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, 17, 20, 67? (a) 43 (b) 17 (c) 20 (d) 67
  2. 2.Which number is the odd one out: 71, 11, 64, 89? (a) 71 (b) 11 (c) 64 (d) 89
  3. 3.Which number is the odd one out: 23, 89, 30, 13? (a) 23 (b) 89 (c) 30 (d) 13
  4. 4.Which number is the odd one out: 31, 26, 17, 19? (a) 31 (b) 26 (c) 17 (d) 19
  5. 5.Which number is the odd one out: 6, 19, 61, 47? (a) 6 (b) 19 (c) 61 (d) 47
  6. 6.Which number is the odd one out: 81, 13, 11, 23? (a) 81 (b) 13 (c) 11 (d) 23
  7. 7.Which number is the odd one out: 86, 26, 57, 22? (a) 86 (b) 26 (c) 57 (d) 22
  8. 8.Which number is the odd one out: 61, 63, 89, 79? (a) 61 (b) 63 (c) 89 (d) 79
  9. 9.Which number is the odd one out: 93, 63, 27, 14? (a) 93 (b) 63 (c) 27 (d) 14
  10. 10.Which number is the odd one out: 19, 90, 5, 33? (a) 19 (b) 90 (c) 5 (d) 33
  11. 11.Which number is the odd one out: 31, 68, 3, 57? (a) 31 (b) 68 (c) 3 (d) 57
  12. 12.Which number is the odd one out: 62, 31, 41, 73? (a) 62 (b) 31 (c) 41 (d) 73
  13. 13.Which number is the odd one out: 68, 87, 76, 92? (a) 68 (b) 87 (c) 76 (d) 92
  14. 14.Which number is the odd one out: 59, 78, 2, 11? (a) 59 (b) 78 (c) 2 (d) 11
  15. 15.Which number is the odd one out: 41, 43, 29, 98? (a) 41 (b) 43 (c) 29 (d) 98
  16. 16.Which number is the odd one out: 79, 47, 75, 3? (a) 79 (b) 47 (c) 75 (d) 3
  17. 17.Which number is the odd one out: 27, 54, 15, 90? (a) 27 (b) 54 (c) 15 (d) 90
  18. 18.Which number is the odd one out: 41, 24, 89, 47? (a) 41 (b) 24 (c) 89 (d) 47
  19. 19.Which number is the odd one out: 29, 35, 98, 70? (a) 29 (b) 35 (c) 98 (d) 70
  20. 20.Which number is the odd one out: 28, 47, 43, 53? (a) 28 (b) 47 (c) 43 (d) 53
  21. 21.Which number is the odd one out: 43, 97, 71, 35? (a) 43 (b) 97 (c) 71 (d) 35
  22. 22.Which number is the odd one out: 57, 3, 41, 51? (a) 57 (b) 3 (c) 41 (d) 51
  23. 23.Which number is the odd one out: 8, 96, 61, 48? (a) 8 (b) 96 (c) 61 (d) 48
  24. 24.Which number is the odd one out: 11, 90, 15, 23? (a) 11 (b) 90 (c) 15 (d) 23
  25. 25.Which number is the odd one out: 79, 33, 29, 83? (a) 79 (b) 33 (c) 29 (d) 83
  26. 26.Which number is the odd one out: 71, 11, 98, 17? (a) 71 (b) 11 (c) 98 (d) 17
  27. 27.Which number is the odd one out: 6, 79, 59, 71? (a) 6 (b) 79 (c) 59 (d) 71
  28. 28.Which number is the odd one out: 79, 20, 17, 37? (a) 79 (b) 20 (c) 17 (d) 37
  29. 29.Which number is the odd one out: 43, 36, 61, 3? (a) 43 (b) 36 (c) 61 (d) 3
  30. 30.Which number is the odd one out: 97, 89, 17, 30? (a) 97 (b) 89 (c) 17 (d) 30
  31. 31.Which number is the odd one out: 12, 25, 4, 30? (a) 12 (b) 25 (c) 4 (d) 30
  32. 32.Which number is the odd one out: 95, 75, 65, 54? (a) 95 (b) 75 (c) 65 (d) 54
  33. 33.Which number is the odd one out: 67, 64, 23, 97? (a) 67 (b) 64 (c) 23 (d) 97
  34. 34.Which number is the odd one out: 73, 83, 79, 93? (a) 73 (b) 83 (c) 79 (d) 93
  35. 35.Which number is the odd one out: 23, 34, 37, 47? (a) 23 (b) 34 (c) 37 (d) 47
  36. 36.Which number is the odd one out: 84, 42, 6, 16? (a) 84 (b) 42 (c) 6 (d) 16
  37. 37.Which number is the odd one out: 97, 13, 41, 75? (a) 97 (b) 13 (c) 41 (d) 75
  38. 38.Which number is the odd one out: 19, 83, 52, 37? (a) 19 (b) 83 (c) 52 (d) 37
  39. 39.Which number is the odd one out: 59, 11, 53, 82? (a) 59 (b) 11 (c) 53 (d) 82
  40. 40.Which number is the odd one out: 94, 11, 2, 17? (a) 94 (b) 11 (c) 2 (d) 17

Answer key

  1. 20
  2. 64
  3. 30
  4. 26
  5. 6
  6. 81
  7. 57
  8. 63
  9. 14
  10. 90
  11. 68
  12. 62
  13. 87
  14. 78
  15. 98
  16. 75
  17. 15
  18. 24
  19. 29
  20. 28
  21. 35
  22. 41
  23. 61
  24. 90
  25. 33
  26. 98
  27. 6
  28. 20
  29. 36
  30. 30
  31. 25
  32. 54
  33. 64
  34. 93
  35. 34
  36. 16
  37. 75
  38. 52
  39. 82
  40. 94

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