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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 305 · 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: 3, 97, 36, 71? (a) 3 (b) 97 (c) 36 (d) 71
  2. 2.Which number is the odd one out: 97, 25, 13, 89? (a) 97 (b) 25 (c) 13 (d) 89
  3. 3.Which number is the odd one out: 71, 89, 2, 68? (a) 71 (b) 89 (c) 2 (d) 68
  4. 4.Which number is the odd one out: 89, 29, 97, 27? (a) 89 (b) 29 (c) 97 (d) 27
  5. 5.Which number is the odd one out: 29, 25, 47, 19? (a) 29 (b) 25 (c) 47 (d) 19
  6. 6.Which number is the odd one out: 71, 54, 29, 3? (a) 71 (b) 54 (c) 29 (d) 3
  7. 7.Which number is the odd one out: 6, 37, 61, 11? (a) 6 (b) 37 (c) 61 (d) 11
  8. 8.Which number is the odd one out: 17, 64, 43, 11? (a) 17 (b) 64 (c) 43 (d) 11
  9. 9.Which number is the odd one out: 30, 65, 96, 55? (a) 30 (b) 65 (c) 96 (d) 55
  10. 10.Which number is the odd one out: 13, 99, 19, 61? (a) 13 (b) 99 (c) 19 (d) 61
  11. 11.Which number is the odd one out: 58, 67, 61, 13? (a) 58 (b) 67 (c) 61 (d) 13
  12. 12.Which number is the odd one out: 54, 13, 11, 89? (a) 54 (b) 13 (c) 11 (d) 89
  13. 13.Which number is the odd one out: 73, 74, 47, 71? (a) 73 (b) 74 (c) 47 (d) 71
  14. 14.Which number is the odd one out: 41, 94, 59, 37? (a) 41 (b) 94 (c) 59 (d) 37
  15. 15.Which number is the odd one out: 61, 97, 17, 94? (a) 61 (b) 97 (c) 17 (d) 94
  16. 16.Which number is the odd one out: 37, 50, 23, 47? (a) 37 (b) 50 (c) 23 (d) 47
  17. 17.Which number is the odd one out: 23, 71, 37, 93? (a) 23 (b) 71 (c) 37 (d) 93
  18. 18.Which number is the odd one out: 53, 11, 28, 2? (a) 53 (b) 11 (c) 28 (d) 2
  19. 19.Which number is the odd one out: 13, 79, 2, 20? (a) 13 (b) 79 (c) 2 (d) 20
  20. 20.Which number is the odd one out: 32, 4, 64, 8? (a) 32 (b) 4 (c) 64 (d) 8
  21. 21.Which number is the odd one out: 43, 18, 69, 83? (a) 43 (b) 18 (c) 69 (d) 83
  22. 22.Which number is the odd one out: 60, 48, 40, 8? (a) 60 (b) 48 (c) 40 (d) 8
  23. 23.Which number is the odd one out: 55, 50, 68, 85? (a) 55 (b) 50 (c) 68 (d) 85
  24. 24.Which number is the odd one out: 77, 12, 84, 94? (a) 77 (b) 12 (c) 84 (d) 94
  25. 25.Which number is the odd one out: 31, 11, 71, 8? (a) 31 (b) 11 (c) 71 (d) 8
  26. 26.Which number is the odd one out: 61, 59, 47, 48? (a) 61 (b) 59 (c) 47 (d) 48
  27. 27.Which number is the odd one out: 60, 6, 5, 12? (a) 60 (b) 6 (c) 5 (d) 12
  28. 28.Which number is the odd one out: 38, 71, 41, 29? (a) 38 (b) 71 (c) 41 (d) 29
  29. 29.Which number is the odd one out: 25, 71, 23, 19? (a) 25 (b) 71 (c) 23 (d) 19
  30. 30.Which number is the odd one out: 67, 61, 83, 66? (a) 67 (b) 61 (c) 83 (d) 66
  31. 31.Which number is the odd one out: 29, 98, 83, 7? (a) 29 (b) 98 (c) 83 (d) 7
  32. 32.Which number is the odd one out: 21, 17, 31, 67? (a) 21 (b) 17 (c) 31 (d) 67
  33. 33.Which number is the odd one out: 67, 13, 21, 43? (a) 67 (b) 13 (c) 21 (d) 43
  34. 34.Which number is the odd one out: 76, 28, 91, 77? (a) 76 (b) 28 (c) 91 (d) 77
  35. 35.Which number is the odd one out: 2, 88, 31, 97? (a) 2 (b) 88 (c) 31 (d) 97
  36. 36.Which number is the odd one out: 68, 61, 58, 52? (a) 68 (b) 61 (c) 58 (d) 52
  37. 37.Which number is the odd one out: 51, 23, 43, 67? (a) 51 (b) 23 (c) 43 (d) 67
  38. 38.Which number is the odd one out: 4, 91, 28, 49? (a) 4 (b) 91 (c) 28 (d) 49
  39. 39.Which number is the odd one out: 99, 33, 34, 27? (a) 99 (b) 33 (c) 34 (d) 27
  40. 40.Which number is the odd one out: 7, 43, 13, 84? (a) 7 (b) 43 (c) 13 (d) 84

Answer key

  1. 36
  2. 25
  3. 68
  4. 27
  5. 25
  6. 54
  7. 6
  8. 64
  9. 96
  10. 99
  11. 58
  12. 54
  13. 74
  14. 94
  15. 94
  16. 50
  17. 93
  18. 28
  19. 20
  20. 4
  21. 18
  22. 60
  23. 68
  24. 77
  25. 8
  26. 48
  27. 5
  28. 38
  29. 25
  30. 66
  31. 98
  32. 21
  33. 21
  34. 76
  35. 88
  36. 61
  37. 51
  38. 4
  39. 34
  40. 84

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