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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 50 · 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, 3, 66? (a) 41 (b) 23 (c) 3 (d) 66
  2. 2.Which number is the odd one out: 13, 83, 71, 20? (a) 13 (b) 83 (c) 71 (d) 20
  3. 3.Which number is the odd one out: 90, 55, 54, 27? (a) 90 (b) 55 (c) 54 (d) 27
  4. 4.Which number is the odd one out: 55, 92, 75, 15? (a) 55 (b) 92 (c) 75 (d) 15
  5. 5.Which number is the odd one out: 73, 67, 33, 43? (a) 73 (b) 67 (c) 33 (d) 43
  6. 6.Which number is the odd one out: 71, 99, 11, 90? (a) 71 (b) 99 (c) 11 (d) 90
  7. 7.Which number is the odd one out: 37, 88, 17, 13? (a) 37 (b) 88 (c) 17 (d) 13
  8. 8.Which number is the odd one out: 31, 37, 91, 79? (a) 31 (b) 37 (c) 91 (d) 79
  9. 9.Which number is the odd one out: 65, 97, 43, 73? (a) 65 (b) 97 (c) 43 (d) 73
  10. 10.Which number is the odd one out: 27, 3, 41, 59? (a) 27 (b) 3 (c) 41 (d) 59
  11. 11.Which number is the odd one out: 3, 27, 67, 47? (a) 3 (b) 27 (c) 67 (d) 47
  12. 12.Which number is the odd one out: 96, 47, 3, 19? (a) 96 (b) 47 (c) 3 (d) 19
  13. 13.Which number is the odd one out: 31, 61, 72, 37? (a) 31 (b) 61 (c) 72 (d) 37
  14. 14.Which number is the odd one out: 9, 19, 47, 13? (a) 9 (b) 19 (c) 47 (d) 13
  15. 15.Which number is the odd one out: 16, 97, 64, 8? (a) 16 (b) 97 (c) 64 (d) 8
  16. 16.Which number is the odd one out: 97, 40, 53, 37? (a) 97 (b) 40 (c) 53 (d) 37
  17. 17.Which number is the odd one out: 81, 25, 9, 65? (a) 81 (b) 25 (c) 9 (d) 65
  18. 18.Which number is the odd one out: 27, 54, 11, 18? (a) 27 (b) 54 (c) 11 (d) 18
  19. 19.Which number is the odd one out: 90, 84, 99, 45? (a) 90 (b) 84 (c) 99 (d) 45
  20. 20.Which number is the odd one out: 47, 13, 17, 64? (a) 47 (b) 13 (c) 17 (d) 64
  21. 21.Which number is the odd one out: 47, 42, 11, 3? (a) 47 (b) 42 (c) 11 (d) 3
  22. 22.Which number is the odd one out: 16, 44, 37, 64? (a) 16 (b) 44 (c) 37 (d) 64
  23. 23.Which number is the odd one out: 11, 43, 89, 82? (a) 11 (b) 43 (c) 89 (d) 82
  24. 24.Which number is the odd one out: 22, 83, 89, 61? (a) 22 (b) 83 (c) 89 (d) 61
  25. 25.Which number is the odd one out: 59, 72, 37, 47? (a) 59 (b) 72 (c) 37 (d) 47
  26. 26.Which number is the odd one out: 88, 5, 16, 64? (a) 88 (b) 5 (c) 16 (d) 64
  27. 27.Which number is the odd one out: 83, 41, 59, 74? (a) 83 (b) 41 (c) 59 (d) 74
  28. 28.Which number is the odd one out: 59, 71, 8, 37? (a) 59 (b) 71 (c) 8 (d) 37
  29. 29.Which number is the odd one out: 49, 29, 61, 17? (a) 49 (b) 29 (c) 61 (d) 17
  30. 30.Which number is the odd one out: 45, 27, 63, 70? (a) 45 (b) 27 (c) 63 (d) 70
  31. 31.Which number is the odd one out: 29, 89, 81, 53? (a) 29 (b) 89 (c) 81 (d) 53
  32. 32.Which number is the odd one out: 83, 53, 47, 96? (a) 83 (b) 53 (c) 47 (d) 96
  33. 33.Which number is the odd one out: 50, 13, 97, 19? (a) 50 (b) 13 (c) 97 (d) 19
  34. 34.Which number is the odd one out: 97, 2, 30, 61? (a) 97 (b) 2 (c) 30 (d) 61
  35. 35.Which number is the odd one out: 4, 3, 16, 8? (a) 4 (b) 3 (c) 16 (d) 8
  36. 36.Which number is the odd one out: 56, 67, 97, 59? (a) 56 (b) 67 (c) 97 (d) 59
  37. 37.Which number is the odd one out: 19, 40, 43, 29? (a) 19 (b) 40 (c) 43 (d) 29
  38. 38.Which number is the odd one out: 53, 83, 67, 24? (a) 53 (b) 83 (c) 67 (d) 24
  39. 39.Which number is the odd one out: 40, 88, 49, 20? (a) 40 (b) 88 (c) 49 (d) 20
  40. 40.Which number is the odd one out: 11, 19, 78, 97? (a) 11 (b) 19 (c) 78 (d) 97

Answer key

  1. 66
  2. 20
  3. 55
  4. 92
  5. 33
  6. 90
  7. 88
  8. 91
  9. 65
  10. 27
  11. 27
  12. 96
  13. 72
  14. 9
  15. 97
  16. 40
  17. 65
  18. 11
  19. 84
  20. 64
  21. 42
  22. 37
  23. 82
  24. 22
  25. 72
  26. 5
  27. 74
  28. 8
  29. 49
  30. 70
  31. 81
  32. 96
  33. 50
  34. 30
  35. 3
  36. 56
  37. 40
  38. 24
  39. 49
  40. 78

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