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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 229 · 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: 23, 13, 28, 61? (a) 23 (b) 13 (c) 28 (d) 61
  2. 2.Which number is the odd one out: 67, 56, 79, 29? (a) 67 (b) 56 (c) 79 (d) 29
  3. 3.Which number is the odd one out: 89, 34, 17, 71? (a) 89 (b) 34 (c) 17 (d) 71
  4. 4.Which number is the odd one out: 17, 67, 63, 23? (a) 17 (b) 67 (c) 63 (d) 23
  5. 5.Which number is the odd one out: 20, 71, 89, 43? (a) 20 (b) 71 (c) 89 (d) 43
  6. 6.Which number is the odd one out: 19, 29, 99, 43? (a) 19 (b) 29 (c) 99 (d) 43
  7. 7.Which number is the odd one out: 41, 67, 2, 28? (a) 41 (b) 67 (c) 2 (d) 28
  8. 8.Which number is the odd one out: 89, 80, 43, 59? (a) 89 (b) 80 (c) 43 (d) 59
  9. 9.Which number is the odd one out: 53, 96, 48, 88? (a) 53 (b) 96 (c) 48 (d) 88
  10. 10.Which number is the odd one out: 64, 14, 16, 56? (a) 64 (b) 14 (c) 16 (d) 56
  11. 11.Which number is the odd one out: 11, 93, 89, 18? (a) 11 (b) 93 (c) 89 (d) 18
  12. 12.Which number is the odd one out: 13, 73, 64, 11? (a) 13 (b) 73 (c) 64 (d) 11
  13. 13.Which number is the odd one out: 14, 6, 42, 5? (a) 14 (b) 6 (c) 42 (d) 5
  14. 14.Which number is the odd one out: 73, 91, 17, 41? (a) 73 (b) 91 (c) 17 (d) 41
  15. 15.Which number is the odd one out: 90, 60, 18, 4? (a) 90 (b) 60 (c) 18 (d) 4
  16. 16.Which number is the odd one out: 53, 23, 99, 79? (a) 53 (b) 23 (c) 99 (d) 79
  17. 17.Which number is the odd one out: 20, 64, 80, 16? (a) 20 (b) 64 (c) 80 (d) 16
  18. 18.Which number is the odd one out: 79, 60, 67, 3? (a) 79 (b) 60 (c) 67 (d) 3
  19. 19.Which number is the odd one out: 16, 67, 73, 29? (a) 16 (b) 67 (c) 73 (d) 29
  20. 20.Which number is the odd one out: 81, 9, 96, 99? (a) 81 (b) 9 (c) 96 (d) 99
  21. 21.Which number is the odd one out: 71, 11, 83, 85? (a) 71 (b) 11 (c) 83 (d) 85
  22. 22.Which number is the odd one out: 20, 19, 13, 41? (a) 20 (b) 19 (c) 13 (d) 41
  23. 23.Which number is the odd one out: 23, 10, 47, 61? (a) 23 (b) 10 (c) 47 (d) 61
  24. 24.Which number is the odd one out: 17, 55, 43, 71? (a) 17 (b) 55 (c) 43 (d) 71
  25. 25.Which number is the odd one out: 32, 16, 5, 4? (a) 32 (b) 16 (c) 5 (d) 4
  26. 26.Which number is the odd one out: 79, 17, 85, 71? (a) 79 (b) 17 (c) 85 (d) 71
  27. 27.Which number is the odd one out: 41, 63, 89, 59? (a) 41 (b) 63 (c) 89 (d) 59
  28. 28.Which number is the odd one out: 54, 43, 59, 37? (a) 54 (b) 43 (c) 59 (d) 37
  29. 29.Which number is the odd one out: 7, 98, 43, 29? (a) 7 (b) 98 (c) 43 (d) 29
  30. 30.Which number is the odd one out: 13, 19, 79, 30? (a) 13 (b) 19 (c) 79 (d) 30
  31. 31.Which number is the odd one out: 91, 84, 77, 12? (a) 91 (b) 84 (c) 77 (d) 12
  32. 32.Which number is the odd one out: 59, 6, 11, 2? (a) 59 (b) 6 (c) 11 (d) 2
  33. 33.Which number is the odd one out: 61, 11, 47, 52? (a) 61 (b) 11 (c) 47 (d) 52
  34. 34.Which number is the odd one out: 73, 76, 83, 97? (a) 73 (b) 76 (c) 83 (d) 97
  35. 35.Which number is the odd one out: 42, 29, 39, 59? (a) 42 (b) 29 (c) 39 (d) 59
  36. 36.Which number is the odd one out: 80, 8, 59, 40? (a) 80 (b) 8 (c) 59 (d) 40
  37. 37.Which number is the odd one out: 62, 11, 23, 67? (a) 62 (b) 11 (c) 23 (d) 67
  38. 38.Which number is the odd one out: 12, 24, 40, 80? (a) 12 (b) 24 (c) 40 (d) 80
  39. 39.Which number is the odd one out: 69, 87, 70, 51? (a) 69 (b) 87 (c) 70 (d) 51
  40. 40.Which number is the odd one out: 29, 14, 71, 83? (a) 29 (b) 14 (c) 71 (d) 83

Answer key

  1. 28
  2. 56
  3. 34
  4. 63
  5. 20
  6. 99
  7. 28
  8. 80
  9. 53
  10. 14
  11. 18
  12. 64
  13. 5
  14. 91
  15. 4
  16. 99
  17. 20
  18. 60
  19. 16
  20. 96
  21. 85
  22. 20
  23. 10
  24. 55
  25. 5
  26. 85
  27. 63
  28. 54
  29. 98
  30. 30
  31. 12
  32. 6
  33. 52
  34. 76
  35. 42
  36. 59
  37. 62
  38. 12
  39. 70
  40. 14

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