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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 27 · 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: 41, 23, 18, 19? (a) 41 (b) 23 (c) 18 (d) 19
  2. 2.Which number is the odd one out: 32, 67, 24, 96? (a) 32 (b) 67 (c) 24 (d) 96
  3. 3.Which number is the odd one out: 89, 84, 73, 53? (a) 89 (b) 84 (c) 73 (d) 53
  4. 4.Which number is the odd one out: 17, 79, 23, 49? (a) 17 (b) 79 (c) 23 (d) 49
  5. 5.Which number is the odd one out: 37, 29, 47, 15? (a) 37 (b) 29 (c) 47 (d) 15
  6. 6.Which number is the odd one out: 48, 6, 63, 24? (a) 48 (b) 6 (c) 63 (d) 24
  7. 7.Which number is the odd one out: 56, 59, 97, 23? (a) 56 (b) 59 (c) 97 (d) 23
  8. 8.Which number is the odd one out: 62, 17, 97, 11? (a) 62 (b) 17 (c) 97 (d) 11
  9. 9.Which number is the odd one out: 23, 34, 17, 73? (a) 23 (b) 34 (c) 17 (d) 73
  10. 10.Which number is the odd one out: 37, 72, 3, 71? (a) 37 (b) 72 (c) 3 (d) 71
  11. 11.Which number is the odd one out: 53, 66, 37, 11? (a) 53 (b) 66 (c) 37 (d) 11
  12. 12.Which number is the odd one out: 71, 83, 37, 72? (a) 71 (b) 83 (c) 37 (d) 72
  13. 13.Which number is the odd one out: 47, 4, 29, 79? (a) 47 (b) 4 (c) 29 (d) 79
  14. 14.Which number is the odd one out: 36, 9, 63, 84? (a) 36 (b) 9 (c) 63 (d) 84
  15. 15.Which number is the odd one out: 71, 4, 59, 37? (a) 71 (b) 4 (c) 59 (d) 37
  16. 16.Which number is the odd one out: 97, 5, 60, 41? (a) 97 (b) 5 (c) 60 (d) 41
  17. 17.Which number is the odd one out: 44, 52, 65, 20? (a) 44 (b) 52 (c) 65 (d) 20
  18. 18.Which number is the odd one out: 23, 29, 67, 88? (a) 23 (b) 29 (c) 67 (d) 88
  19. 19.Which number is the odd one out: 17, 29, 94, 59? (a) 17 (b) 29 (c) 94 (d) 59
  20. 20.Which number is the odd one out: 68, 71, 47, 11? (a) 68 (b) 71 (c) 47 (d) 11
  21. 21.Which number is the odd one out: 58, 39, 15, 65? (a) 58 (b) 39 (c) 15 (d) 65
  22. 22.Which number is the odd one out: 21, 49, 36, 28? (a) 21 (b) 49 (c) 36 (d) 28
  23. 23.Which number is the odd one out: 61, 59, 79, 40? (a) 61 (b) 59 (c) 79 (d) 40
  24. 24.Which number is the odd one out: 24, 59, 88, 96? (a) 24 (b) 59 (c) 88 (d) 96
  25. 25.Which number is the odd one out: 90, 5, 18, 99? (a) 90 (b) 5 (c) 18 (d) 99
  26. 26.Which number is the odd one out: 11, 31, 77, 29? (a) 11 (b) 31 (c) 77 (d) 29
  27. 27.Which number is the odd one out: 90, 67, 17, 13? (a) 90 (b) 67 (c) 17 (d) 13
  28. 28.Which number is the odd one out: 79, 59, 6, 89? (a) 79 (b) 59 (c) 6 (d) 89
  29. 29.Which number is the odd one out: 61, 73, 55, 89? (a) 61 (b) 73 (c) 55 (d) 89
  30. 30.Which number is the odd one out: 70, 15, 72, 35? (a) 70 (b) 15 (c) 72 (d) 35
  31. 31.Which number is the odd one out: 43, 53, 42, 59? (a) 43 (b) 53 (c) 42 (d) 59
  32. 32.Which number is the odd one out: 17, 11, 33, 79? (a) 17 (b) 11 (c) 33 (d) 79
  33. 33.Which number is the odd one out: 61, 17, 79, 78? (a) 61 (b) 17 (c) 79 (d) 78
  34. 34.Which number is the odd one out: 32, 14, 88, 8? (a) 32 (b) 14 (c) 88 (d) 8
  35. 35.Which number is the odd one out: 14, 13, 23, 79? (a) 14 (b) 13 (c) 23 (d) 79
  36. 36.Which number is the odd one out: 13, 25, 53, 67? (a) 13 (b) 25 (c) 53 (d) 67
  37. 37.Which number is the odd one out: 80, 24, 60, 43? (a) 80 (b) 24 (c) 60 (d) 43
  38. 38.Which number is the odd one out: 43, 13, 34, 73? (a) 43 (b) 13 (c) 34 (d) 73
  39. 39.Which number is the odd one out: 48, 73, 31, 13? (a) 48 (b) 73 (c) 31 (d) 13
  40. 40.Which number is the odd one out: 78, 61, 73, 89? (a) 78 (b) 61 (c) 73 (d) 89

Answer key

  1. 18
  2. 67
  3. 84
  4. 49
  5. 15
  6. 63
  7. 56
  8. 62
  9. 34
  10. 72
  11. 66
  12. 72
  13. 4
  14. 84
  15. 4
  16. 60
  17. 65
  18. 88
  19. 94
  20. 68
  21. 58
  22. 36
  23. 40
  24. 59
  25. 5
  26. 77
  27. 90
  28. 6
  29. 55
  30. 72
  31. 42
  32. 33
  33. 78
  34. 14
  35. 14
  36. 25
  37. 43
  38. 34
  39. 48
  40. 78

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