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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 947 · 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: 9, 95, 45, 81? (a) 9 (b) 95 (c) 45 (d) 81
  2. 2.Which number is the odd one out: 89, 97, 53, 82? (a) 89 (b) 97 (c) 53 (d) 82
  3. 3.Which number is the odd one out: 35, 11, 47, 23? (a) 35 (b) 11 (c) 47 (d) 23
  4. 4.Which number is the odd one out: 89, 67, 73, 82? (a) 89 (b) 67 (c) 73 (d) 82
  5. 5.Which number is the odd one out: 79, 62, 76, 68? (a) 79 (b) 62 (c) 76 (d) 68
  6. 6.Which number is the odd one out: 15, 90, 6, 18? (a) 15 (b) 90 (c) 6 (d) 18
  7. 7.Which number is the odd one out: 11, 89, 67, 4? (a) 11 (b) 89 (c) 67 (d) 4
  8. 8.Which number is the odd one out: 61, 38, 67, 83? (a) 61 (b) 38 (c) 67 (d) 83
  9. 9.Which number is the odd one out: 25, 48, 40, 24? (a) 25 (b) 48 (c) 40 (d) 24
  10. 10.Which number is the odd one out: 51, 59, 84, 79? (a) 51 (b) 59 (c) 84 (d) 79
  11. 11.Which number is the odd one out: 17, 85, 20, 29? (a) 17 (b) 85 (c) 20 (d) 29
  12. 12.Which number is the odd one out: 47, 79, 56, 13? (a) 47 (b) 79 (c) 56 (d) 13
  13. 13.Which number is the odd one out: 11, 39, 84, 53? (a) 11 (b) 39 (c) 84 (d) 53
  14. 14.Which number is the odd one out: 19, 13, 8, 11? (a) 19 (b) 13 (c) 8 (d) 11
  15. 15.Which number is the odd one out: 86, 71, 79, 23? (a) 86 (b) 71 (c) 79 (d) 23
  16. 16.Which number is the odd one out: 41, 47, 36, 11? (a) 41 (b) 47 (c) 36 (d) 11
  17. 17.Which number is the odd one out: 67, 29, 38, 73? (a) 67 (b) 29 (c) 38 (d) 73
  18. 18.Which number is the odd one out: 84, 37, 71, 97? (a) 84 (b) 37 (c) 71 (d) 97
  19. 19.Which number is the odd one out: 31, 59, 9, 43? (a) 31 (b) 59 (c) 9 (d) 43
  20. 20.Which number is the odd one out: 46, 23, 47, 53? (a) 46 (b) 23 (c) 47 (d) 53
  21. 21.Which number is the odd one out: 61, 29, 41, 91? (a) 61 (b) 29 (c) 41 (d) 91
  22. 22.Which number is the odd one out: 85, 65, 15, 6? (a) 85 (b) 65 (c) 15 (d) 6
  23. 23.Which number is the odd one out: 57, 61, 36, 31? (a) 57 (b) 61 (c) 36 (d) 31
  24. 24.Which number is the odd one out: 52, 4, 9, 81? (a) 52 (b) 4 (c) 9 (d) 81
  25. 25.Which number is the odd one out: 48, 96, 3, 59? (a) 48 (b) 96 (c) 3 (d) 59
  26. 26.Which number is the odd one out: 9, 50, 99, 81? (a) 9 (b) 50 (c) 99 (d) 81
  27. 27.Which number is the odd one out: 5, 89, 97, 20? (a) 5 (b) 89 (c) 97 (d) 20
  28. 28.Which number is the odd one out: 23, 81, 61, 19? (a) 23 (b) 81 (c) 61 (d) 19
  29. 29.Which number is the odd one out: 88, 80, 32, 50? (a) 88 (b) 80 (c) 32 (d) 50
  30. 30.Which number is the odd one out: 38, 13, 43, 2? (a) 38 (b) 13 (c) 43 (d) 2
  31. 31.Which number is the odd one out: 96, 48, 47, 66? (a) 96 (b) 48 (c) 47 (d) 66
  32. 32.Which number is the odd one out: 2, 44, 11, 43? (a) 2 (b) 44 (c) 11 (d) 43
  33. 33.Which number is the odd one out: 23, 67, 37, 38? (a) 23 (b) 67 (c) 37 (d) 38
  34. 34.Which number is the odd one out: 32, 56, 64, 49? (a) 32 (b) 56 (c) 64 (d) 49
  35. 35.Which number is the odd one out: 71, 73, 2, 86? (a) 71 (b) 73 (c) 2 (d) 86
  36. 36.Which number is the odd one out: 19, 43, 96, 17? (a) 19 (b) 43 (c) 96 (d) 17
  37. 37.Which number is the odd one out: 61, 23, 76, 37? (a) 61 (b) 23 (c) 76 (d) 37
  38. 38.Which number is the odd one out: 5, 11, 19, 15? (a) 5 (b) 11 (c) 19 (d) 15
  39. 39.Which number is the odd one out: 19, 79, 36, 13? (a) 19 (b) 79 (c) 36 (d) 13
  40. 40.Which number is the odd one out: 85, 71, 31, 41? (a) 85 (b) 71 (c) 31 (d) 41

Answer key

  1. 95
  2. 82
  3. 35
  4. 82
  5. 79
  6. 15
  7. 4
  8. 38
  9. 25
  10. 84
  11. 20
  12. 56
  13. 84
  14. 8
  15. 86
  16. 36
  17. 38
  18. 84
  19. 9
  20. 46
  21. 91
  22. 6
  23. 36
  24. 52
  25. 59
  26. 50
  27. 20
  28. 81
  29. 50
  30. 38
  31. 47
  32. 44
  33. 38
  34. 49
  35. 86
  36. 96
  37. 76
  38. 15
  39. 36
  40. 85

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