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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 155 · 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: 2, 7, 28, 31? (a) 2 (b) 7 (c) 28 (d) 31
  2. 2.Which number is the odd one out: 17, 90, 11, 41? (a) 17 (b) 90 (c) 11 (d) 41
  3. 3.Which number is the odd one out: 42, 47, 84, 68? (a) 42 (b) 47 (c) 84 (d) 68
  4. 4.Which number is the odd one out: 67, 43, 13, 68? (a) 67 (b) 43 (c) 13 (d) 68
  5. 5.Which number is the odd one out: 11, 66, 78, 6? (a) 11 (b) 66 (c) 78 (d) 6
  6. 6.Which number is the odd one out: 59, 97, 44, 79? (a) 59 (b) 97 (c) 44 (d) 79
  7. 7.Which number is the odd one out: 11, 3, 31, 15? (a) 11 (b) 3 (c) 31 (d) 15
  8. 8.Which number is the odd one out: 97, 5, 95, 65? (a) 97 (b) 5 (c) 95 (d) 65
  9. 9.Which number is the odd one out: 89, 14, 53, 13? (a) 89 (b) 14 (c) 53 (d) 13
  10. 10.Which number is the odd one out: 53, 82, 83, 43? (a) 53 (b) 82 (c) 83 (d) 43
  11. 11.Which number is the odd one out: 31, 17, 29, 72? (a) 31 (b) 17 (c) 29 (d) 72
  12. 12.Which number is the odd one out: 29, 4, 11, 2? (a) 29 (b) 4 (c) 11 (d) 2
  13. 13.Which number is the odd one out: 97, 10, 71, 59? (a) 97 (b) 10 (c) 71 (d) 59
  14. 14.Which number is the odd one out: 40, 80, 12, 88? (a) 40 (b) 80 (c) 12 (d) 88
  15. 15.Which number is the odd one out: 74, 83, 13, 29? (a) 74 (b) 83 (c) 13 (d) 29
  16. 16.Which number is the odd one out: 78, 97, 89, 19? (a) 78 (b) 97 (c) 89 (d) 19
  17. 17.Which number is the odd one out: 57, 41, 72, 43? (a) 57 (b) 41 (c) 72 (d) 43
  18. 18.Which number is the odd one out: 64, 18, 72, 54? (a) 64 (b) 18 (c) 72 (d) 54
  19. 19.Which number is the odd one out: 9, 84, 18, 81? (a) 9 (b) 84 (c) 18 (d) 81
  20. 20.Which number is the odd one out: 5, 17, 41, 95? (a) 5 (b) 17 (c) 41 (d) 95
  21. 21.Which number is the odd one out: 65, 88, 28, 56? (a) 65 (b) 88 (c) 28 (d) 56
  22. 22.Which number is the odd one out: 37, 26, 13, 71? (a) 37 (b) 26 (c) 13 (d) 71
  23. 23.Which number is the odd one out: 29, 73, 24, 59? (a) 29 (b) 73 (c) 24 (d) 59
  24. 24.Which number is the odd one out: 73, 20, 19, 83? (a) 73 (b) 20 (c) 19 (d) 83
  25. 25.Which number is the odd one out: 31, 14, 10, 70? (a) 31 (b) 14 (c) 10 (d) 70
  26. 26.Which number is the odd one out: 27, 19, 79, 89? (a) 27 (b) 19 (c) 79 (d) 89
  27. 27.Which number is the odd one out: 5, 50, 2, 55? (a) 5 (b) 50 (c) 2 (d) 55
  28. 28.Which number is the odd one out: 57, 59, 67, 78? (a) 57 (b) 59 (c) 67 (d) 78
  29. 29.Which number is the odd one out: 37, 41, 97, 22? (a) 37 (b) 41 (c) 97 (d) 22
  30. 30.Which number is the odd one out: 67, 97, 74, 13? (a) 67 (b) 97 (c) 74 (d) 13
  31. 31.Which number is the odd one out: 67, 71, 49, 31? (a) 67 (b) 71 (c) 49 (d) 31
  32. 32.Which number is the odd one out: 8, 76, 61, 32? (a) 8 (b) 76 (c) 61 (d) 32
  33. 33.Which number is the odd one out: 70, 77, 55, 10? (a) 70 (b) 77 (c) 55 (d) 10
  34. 34.Which number is the odd one out: 53, 82, 11, 47? (a) 53 (b) 82 (c) 11 (d) 47
  35. 35.Which number is the odd one out: 76, 24, 46, 96? (a) 76 (b) 24 (c) 46 (d) 96
  36. 36.Which number is the odd one out: 31, 84, 97, 41? (a) 31 (b) 84 (c) 97 (d) 41
  37. 37.Which number is the odd one out: 32, 96, 58, 48? (a) 32 (b) 96 (c) 58 (d) 48
  38. 38.Which number is the odd one out: 24, 30, 10, 20? (a) 24 (b) 30 (c) 10 (d) 20
  39. 39.Which number is the odd one out: 79, 5, 20, 71? (a) 79 (b) 5 (c) 20 (d) 71
  40. 40.Which number is the odd one out: 24, 83, 6, 96? (a) 24 (b) 83 (c) 6 (d) 96

Answer key

  1. 28
  2. 90
  3. 47
  4. 68
  5. 11
  6. 44
  7. 15
  8. 97
  9. 14
  10. 82
  11. 72
  12. 4
  13. 10
  14. 12
  15. 74
  16. 78
  17. 72
  18. 64
  19. 84
  20. 95
  21. 65
  22. 26
  23. 24
  24. 20
  25. 31
  26. 27
  27. 2
  28. 78
  29. 22
  30. 74
  31. 49
  32. 61
  33. 77
  34. 82
  35. 46
  36. 84
  37. 58
  38. 24
  39. 20
  40. 83

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