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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 504 · 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: 43, 97, 21, 11? (a) 43 (b) 97 (c) 21 (d) 11
  2. 2.Which number is the odd one out: 18, 25, 36, 60? (a) 18 (b) 25 (c) 36 (d) 60
  3. 3.Which number is the odd one out: 79, 29, 47, 80? (a) 79 (b) 29 (c) 47 (d) 80
  4. 4.Which number is the odd one out: 29, 19, 68, 2? (a) 29 (b) 19 (c) 68 (d) 2
  5. 5.Which number is the odd one out: 59, 11, 71, 24? (a) 59 (b) 11 (c) 71 (d) 24
  6. 6.Which number is the odd one out: 55, 67, 83, 43? (a) 55 (b) 67 (c) 83 (d) 43
  7. 7.Which number is the odd one out: 53, 6, 83, 43? (a) 53 (b) 6 (c) 83 (d) 43
  8. 8.Which number is the odd one out: 37, 40, 5, 19? (a) 37 (b) 40 (c) 5 (d) 19
  9. 9.Which number is the odd one out: 47, 61, 90, 23? (a) 47 (b) 61 (c) 90 (d) 23
  10. 10.Which number is the odd one out: 70, 56, 40, 8? (a) 70 (b) 56 (c) 40 (d) 8
  11. 11.Which number is the odd one out: 71, 24, 31, 13? (a) 71 (b) 24 (c) 31 (d) 13
  12. 12.Which number is the odd one out: 60, 62, 48, 80? (a) 60 (b) 62 (c) 48 (d) 80
  13. 13.Which number is the odd one out: 29, 13, 83, 30? (a) 29 (b) 13 (c) 83 (d) 30
  14. 14.Which number is the odd one out: 43, 37, 94, 2? (a) 43 (b) 37 (c) 94 (d) 2
  15. 15.Which number is the odd one out: 88, 72, 18, 8? (a) 88 (b) 72 (c) 18 (d) 8
  16. 16.Which number is the odd one out: 81, 27, 9, 97? (a) 81 (b) 27 (c) 9 (d) 97
  17. 17.Which number is the odd one out: 31, 82, 37, 61? (a) 31 (b) 82 (c) 37 (d) 61
  18. 18.Which number is the odd one out: 68, 96, 24, 32? (a) 68 (b) 96 (c) 24 (d) 32
  19. 19.Which number is the odd one out: 95, 68, 50, 65? (a) 95 (b) 68 (c) 50 (d) 65
  20. 20.Which number is the odd one out: 11, 83, 13, 12? (a) 11 (b) 83 (c) 13 (d) 12
  21. 21.Which number is the odd one out: 13, 7, 23, 63? (a) 13 (b) 7 (c) 23 (d) 63
  22. 22.Which number is the odd one out: 95, 53, 5, 62? (a) 95 (b) 53 (c) 5 (d) 62
  23. 23.Which number is the odd one out: 32, 8, 24, 66? (a) 32 (b) 8 (c) 24 (d) 66
  24. 24.Which number is the odd one out: 13, 73, 53, 20? (a) 13 (b) 73 (c) 53 (d) 20
  25. 25.Which number is the odd one out: 42, 19, 43, 17? (a) 42 (b) 19 (c) 43 (d) 17
  26. 26.Which number is the odd one out: 89, 43, 14, 61? (a) 89 (b) 43 (c) 14 (d) 61
  27. 27.Which number is the odd one out: 21, 17, 53, 29? (a) 21 (b) 17 (c) 53 (d) 29
  28. 28.Which number is the odd one out: 19, 74, 37, 73? (a) 19 (b) 74 (c) 37 (d) 73
  29. 29.Which number is the odd one out: 15, 75, 52, 85? (a) 15 (b) 75 (c) 52 (d) 85
  30. 30.Which number is the odd one out: 9, 31, 59, 13? (a) 9 (b) 31 (c) 59 (d) 13
  31. 31.Which number is the odd one out: 6, 90, 95, 18? (a) 6 (b) 90 (c) 95 (d) 18
  32. 32.Which number is the odd one out: 13, 46, 41, 11? (a) 13 (b) 46 (c) 41 (d) 11
  33. 33.Which number is the odd one out: 4, 6, 66, 78? (a) 4 (b) 6 (c) 66 (d) 78
  34. 34.Which number is the odd one out: 16, 17, 87, 3? (a) 16 (b) 17 (c) 87 (d) 3
  35. 35.Which number is the odd one out: 83, 69, 97, 23? (a) 83 (b) 69 (c) 97 (d) 23
  36. 36.Which number is the odd one out: 47, 3, 66, 29? (a) 47 (b) 3 (c) 66 (d) 29
  37. 37.Which number is the odd one out: 11, 71, 10, 59? (a) 11 (b) 71 (c) 10 (d) 59
  38. 38.Which number is the odd one out: 53, 11, 56, 17? (a) 53 (b) 11 (c) 56 (d) 17
  39. 39.Which number is the odd one out: 96, 72, 99, 48? (a) 96 (b) 72 (c) 99 (d) 48
  40. 40.Which number is the odd one out: 70, 11, 77, 29? (a) 70 (b) 11 (c) 77 (d) 29

Answer key

  1. 21
  2. 25
  3. 80
  4. 68
  5. 24
  6. 55
  7. 6
  8. 40
  9. 90
  10. 70
  11. 24
  12. 62
  13. 30
  14. 94
  15. 18
  16. 97
  17. 82
  18. 68
  19. 68
  20. 12
  21. 63
  22. 62
  23. 66
  24. 20
  25. 42
  26. 14
  27. 21
  28. 74
  29. 52
  30. 9
  31. 95
  32. 46
  33. 4
  34. 16
  35. 69
  36. 66
  37. 10
  38. 56
  39. 99
  40. 70

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