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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 990 · 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: 47, 19, 83, 8? (a) 47 (b) 19 (c) 83 (d) 8
  2. 2.Which number is the odd one out: 18, 94, 5, 54? (a) 18 (b) 94 (c) 5 (d) 54
  3. 3.Which number is the odd one out: 56, 28, 88, 90? (a) 56 (b) 28 (c) 88 (d) 90
  4. 4.Which number is the odd one out: 42, 24, 48, 7? (a) 42 (b) 24 (c) 48 (d) 7
  5. 5.Which number is the odd one out: 48, 57, 72, 18? (a) 48 (b) 57 (c) 72 (d) 18
  6. 6.Which number is the odd one out: 79, 59, 71, 70? (a) 79 (b) 59 (c) 71 (d) 70
  7. 7.Which number is the odd one out: 35, 19, 97, 29? (a) 35 (b) 19 (c) 97 (d) 29
  8. 8.Which number is the odd one out: 11, 89, 59, 24? (a) 11 (b) 89 (c) 59 (d) 24
  9. 9.Which number is the odd one out: 61, 13, 79, 16? (a) 61 (b) 13 (c) 79 (d) 16
  10. 10.Which number is the odd one out: 7, 73, 14, 53? (a) 7 (b) 73 (c) 14 (d) 53
  11. 11.Which number is the odd one out: 19, 2, 94, 23? (a) 19 (b) 2 (c) 94 (d) 23
  12. 12.Which number is the odd one out: 10, 85, 98, 65? (a) 10 (b) 85 (c) 98 (d) 65
  13. 13.Which number is the odd one out: 18, 59, 11, 47? (a) 18 (b) 59 (c) 11 (d) 47
  14. 14.Which number is the odd one out: 27, 89, 47, 59? (a) 27 (b) 89 (c) 47 (d) 59
  15. 15.Which number is the odd one out: 96, 66, 48, 7? (a) 96 (b) 66 (c) 48 (d) 7
  16. 16.Which number is the odd one out: 23, 17, 37, 45? (a) 23 (b) 17 (c) 37 (d) 45
  17. 17.Which number is the odd one out: 21, 18, 45, 90? (a) 21 (b) 18 (c) 45 (d) 90
  18. 18.Which number is the odd one out: 88, 48, 7, 12? (a) 88 (b) 48 (c) 7 (d) 12
  19. 19.Which number is the odd one out: 47, 8, 73, 53? (a) 47 (b) 8 (c) 73 (d) 53
  20. 20.Which number is the odd one out: 13, 47, 2, 60? (a) 13 (b) 47 (c) 2 (d) 60
  21. 21.Which number is the odd one out: 27, 7, 18, 54? (a) 27 (b) 7 (c) 18 (d) 54
  22. 22.Which number is the odd one out: 56, 19, 84, 96? (a) 56 (b) 19 (c) 84 (d) 96
  23. 23.Which number is the odd one out: 20, 10, 84, 70? (a) 20 (b) 10 (c) 84 (d) 70
  24. 24.Which number is the odd one out: 45, 88, 20, 32? (a) 45 (b) 88 (c) 20 (d) 32
  25. 25.Which number is the odd one out: 85, 89, 41, 79? (a) 85 (b) 89 (c) 41 (d) 79
  26. 26.Which number is the odd one out: 64, 3, 4, 16? (a) 64 (b) 3 (c) 4 (d) 16
  27. 27.Which number is the odd one out: 73, 43, 46, 79? (a) 73 (b) 43 (c) 46 (d) 79
  28. 28.Which number is the odd one out: 13, 43, 75, 11? (a) 13 (b) 43 (c) 75 (d) 11
  29. 29.Which number is the odd one out: 27, 61, 47, 19? (a) 27 (b) 61 (c) 47 (d) 19
  30. 30.Which number is the odd one out: 64, 16, 4, 70? (a) 64 (b) 16 (c) 4 (d) 70
  31. 31.Which number is the odd one out: 29, 10, 31, 5? (a) 29 (b) 10 (c) 31 (d) 5
  32. 32.Which number is the odd one out: 97, 53, 55, 43? (a) 97 (b) 53 (c) 55 (d) 43
  33. 33.Which number is the odd one out: 53, 73, 79, 30? (a) 53 (b) 73 (c) 79 (d) 30
  34. 34.Which number is the odd one out: 41, 67, 23, 10? (a) 41 (b) 67 (c) 23 (d) 10
  35. 35.Which number is the odd one out: 64, 14, 16, 88? (a) 64 (b) 14 (c) 16 (d) 88
  36. 36.Which number is the odd one out: 31, 89, 82, 73? (a) 31 (b) 89 (c) 82 (d) 73
  37. 37.Which number is the odd one out: 98, 79, 83, 67? (a) 98 (b) 79 (c) 83 (d) 67
  38. 38.Which number is the odd one out: 41, 47, 17, 24? (a) 41 (b) 47 (c) 17 (d) 24
  39. 39.Which number is the odd one out: 19, 39, 3, 41? (a) 19 (b) 39 (c) 3 (d) 41
  40. 40.Which number is the odd one out: 24, 72, 18, 59? (a) 24 (b) 72 (c) 18 (d) 59

Answer key

  1. 8
  2. 5
  3. 90
  4. 7
  5. 57
  6. 70
  7. 35
  8. 24
  9. 16
  10. 14
  11. 94
  12. 98
  13. 18
  14. 27
  15. 7
  16. 45
  17. 21
  18. 7
  19. 8
  20. 60
  21. 7
  22. 19
  23. 84
  24. 45
  25. 85
  26. 3
  27. 46
  28. 75
  29. 27
  30. 70
  31. 10
  32. 55
  33. 30
  34. 10
  35. 14
  36. 82
  37. 98
  38. 24
  39. 39
  40. 59

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