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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 546 · 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: 18, 19, 43, 11? (a) 18 (b) 19 (c) 43 (d) 11
  2. 2.Which number is the odd one out: 71, 27, 17, 83? (a) 71 (b) 27 (c) 17 (d) 83
  3. 3.Which number is the odd one out: 98, 70, 14, 20? (a) 98 (b) 70 (c) 14 (d) 20
  4. 4.Which number is the odd one out: 43, 97, 23, 78? (a) 43 (b) 97 (c) 23 (d) 78
  5. 5.Which number is the odd one out: 97, 46, 50, 10? (a) 97 (b) 46 (c) 50 (d) 10
  6. 6.Which number is the odd one out: 8, 60, 88, 24? (a) 8 (b) 60 (c) 88 (d) 24
  7. 7.Which number is the odd one out: 54, 87, 23, 19? (a) 54 (b) 87 (c) 23 (d) 19
  8. 8.Which number is the odd one out: 88, 32, 33, 76? (a) 88 (b) 32 (c) 33 (d) 76
  9. 9.Which number is the odd one out: 98, 37, 53, 13? (a) 98 (b) 37 (c) 53 (d) 13
  10. 10.Which number is the odd one out: 13, 19, 53, 58? (a) 13 (b) 19 (c) 53 (d) 58
  11. 11.Which number is the odd one out: 97, 28, 67, 61? (a) 97 (b) 28 (c) 67 (d) 61
  12. 12.Which number is the odd one out: 83, 84, 47, 67? (a) 83 (b) 84 (c) 47 (d) 67
  13. 13.Which number is the odd one out: 27, 99, 8, 93? (a) 27 (b) 99 (c) 8 (d) 93
  14. 14.Which number is the odd one out: 47, 97, 39, 19? (a) 47 (b) 97 (c) 39 (d) 19
  15. 15.Which number is the odd one out: 53, 59, 41, 12? (a) 53 (b) 59 (c) 41 (d) 12
  16. 16.Which number is the odd one out: 15, 17, 75, 5? (a) 15 (b) 17 (c) 75 (d) 5
  17. 17.Which number is the odd one out: 37, 23, 17, 6? (a) 37 (b) 23 (c) 17 (d) 6
  18. 18.Which number is the odd one out: 8, 67, 79, 11? (a) 8 (b) 67 (c) 79 (d) 11
  19. 19.Which number is the odd one out: 24, 96, 3, 48? (a) 24 (b) 96 (c) 3 (d) 48
  20. 20.Which number is the odd one out: 61, 32, 37, 29? (a) 61 (b) 32 (c) 37 (d) 29
  21. 21.Which number is the odd one out: 2, 23, 84, 59? (a) 2 (b) 23 (c) 84 (d) 59
  22. 22.Which number is the odd one out: 89, 19, 79, 6? (a) 89 (b) 19 (c) 79 (d) 6
  23. 23.Which number is the odd one out: 81, 98, 70, 35? (a) 81 (b) 98 (c) 70 (d) 35
  24. 24.Which number is the odd one out: 89, 53, 29, 94? (a) 89 (b) 53 (c) 29 (d) 94
  25. 25.Which number is the odd one out: 4, 65, 95, 25? (a) 4 (b) 65 (c) 95 (d) 25
  26. 26.Which number is the odd one out: 98, 55, 70, 74? (a) 98 (b) 55 (c) 70 (d) 74
  27. 27.Which number is the odd one out: 53, 21, 29, 43? (a) 53 (b) 21 (c) 29 (d) 43
  28. 28.Which number is the odd one out: 13, 21, 89, 7? (a) 13 (b) 21 (c) 89 (d) 7
  29. 29.Which number is the odd one out: 13, 67, 71, 63? (a) 13 (b) 67 (c) 71 (d) 63
  30. 30.Which number is the odd one out: 44, 53, 68, 52? (a) 44 (b) 53 (c) 68 (d) 52
  31. 31.Which number is the odd one out: 83, 26, 37, 11? (a) 83 (b) 26 (c) 37 (d) 11
  32. 32.Which number is the odd one out: 45, 23, 13, 97? (a) 45 (b) 23 (c) 13 (d) 97
  33. 33.Which number is the odd one out: 67, 10, 89, 11? (a) 67 (b) 10 (c) 89 (d) 11
  34. 34.Which number is the odd one out: 56, 29, 7, 23? (a) 56 (b) 29 (c) 7 (d) 23
  35. 35.Which number is the odd one out: 30, 15, 67, 6? (a) 30 (b) 15 (c) 67 (d) 6
  36. 36.Which number is the odd one out: 15, 60, 29, 37? (a) 15 (b) 60 (c) 29 (d) 37
  37. 37.Which number is the odd one out: 39, 55, 15, 85? (a) 39 (b) 55 (c) 15 (d) 85
  38. 38.Which number is the odd one out: 19, 29, 27, 11? (a) 19 (b) 29 (c) 27 (d) 11
  39. 39.Which number is the odd one out: 2, 94, 79, 97? (a) 2 (b) 94 (c) 79 (d) 97
  40. 40.Which number is the odd one out: 41, 85, 31, 30? (a) 41 (b) 85 (c) 31 (d) 30

Answer key

  1. 18
  2. 27
  3. 20
  4. 78
  5. 97
  6. 60
  7. 54
  8. 33
  9. 98
  10. 58
  11. 28
  12. 84
  13. 8
  14. 39
  15. 12
  16. 17
  17. 6
  18. 8
  19. 3
  20. 32
  21. 84
  22. 6
  23. 81
  24. 94
  25. 4
  26. 55
  27. 21
  28. 21
  29. 63
  30. 53
  31. 26
  32. 45
  33. 10
  34. 56
  35. 67
  36. 60
  37. 39
  38. 27
  39. 94
  40. 30

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