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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 560 · 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: 13, 65, 19, 41? (a) 13 (b) 65 (c) 19 (d) 41
  2. 2.Which number is the odd one out: 71, 6, 31, 2? (a) 71 (b) 6 (c) 31 (d) 2
  3. 3.Which number is the odd one out: 72, 45, 85, 20? (a) 72 (b) 45 (c) 85 (d) 20
  4. 4.Which number is the odd one out: 45, 99, 58, 85? (a) 45 (b) 99 (c) 58 (d) 85
  5. 5.Which number is the odd one out: 75, 95, 65, 42? (a) 75 (b) 95 (c) 65 (d) 42
  6. 6.Which number is the odd one out: 47, 86, 17, 61? (a) 47 (b) 86 (c) 17 (d) 61
  7. 7.Which number is the odd one out: 57, 61, 79, 83? (a) 57 (b) 61 (c) 79 (d) 83
  8. 8.Which number is the odd one out: 10, 13, 89, 2? (a) 10 (b) 13 (c) 89 (d) 2
  9. 9.Which number is the odd one out: 40, 80, 15, 33? (a) 40 (b) 80 (c) 15 (d) 33
  10. 10.Which number is the odd one out: 81, 49, 9, 7? (a) 81 (b) 49 (c) 9 (d) 7
  11. 11.Which number is the odd one out: 28, 75, 44, 98? (a) 28 (b) 75 (c) 44 (d) 98
  12. 12.Which number is the odd one out: 19, 97, 44, 83? (a) 19 (b) 97 (c) 44 (d) 83
  13. 13.Which number is the odd one out: 26, 5, 65, 61? (a) 26 (b) 5 (c) 65 (d) 61
  14. 14.Which number is the odd one out: 90, 45, 29, 18? (a) 90 (b) 45 (c) 29 (d) 18
  15. 15.Which number is the odd one out: 37, 29, 30, 71? (a) 37 (b) 29 (c) 30 (d) 71
  16. 16.Which number is the odd one out: 6, 23, 79, 59? (a) 6 (b) 23 (c) 79 (d) 59
  17. 17.Which number is the odd one out: 78, 67, 31, 37? (a) 78 (b) 67 (c) 31 (d) 37
  18. 18.Which number is the odd one out: 31, 37, 13, 52? (a) 31 (b) 37 (c) 13 (d) 52
  19. 19.Which number is the odd one out: 23, 61, 26, 17? (a) 23 (b) 61 (c) 26 (d) 17
  20. 20.Which number is the odd one out: 13, 85, 53, 47? (a) 13 (b) 85 (c) 53 (d) 47
  21. 21.Which number is the odd one out: 29, 53, 72, 2? (a) 29 (b) 53 (c) 72 (d) 2
  22. 22.Which number is the odd one out: 15, 11, 60, 23? (a) 15 (b) 11 (c) 60 (d) 23
  23. 23.Which number is the odd one out: 28, 7, 41, 59? (a) 28 (b) 7 (c) 41 (d) 59
  24. 24.Which number is the odd one out: 92, 47, 13, 17? (a) 92 (b) 47 (c) 13 (d) 17
  25. 25.Which number is the odd one out: 20, 19, 31, 2? (a) 20 (b) 19 (c) 31 (d) 2
  26. 26.Which number is the odd one out: 67, 85, 47, 83? (a) 67 (b) 85 (c) 47 (d) 83
  27. 27.Which number is the odd one out: 41, 35, 31, 61? (a) 41 (b) 35 (c) 31 (d) 61
  28. 28.Which number is the odd one out: 73, 37, 11, 27? (a) 73 (b) 37 (c) 11 (d) 27
  29. 29.Which number is the odd one out: 76, 47, 13, 59? (a) 76 (b) 47 (c) 13 (d) 59
  30. 30.Which number is the odd one out: 45, 27, 10, 99? (a) 45 (b) 27 (c) 10 (d) 99
  31. 31.Which number is the odd one out: 67, 17, 47, 87? (a) 67 (b) 17 (c) 47 (d) 87
  32. 32.Which number is the odd one out: 89, 80, 52, 40? (a) 89 (b) 80 (c) 52 (d) 40
  33. 33.Which number is the odd one out: 82, 47, 19, 67? (a) 82 (b) 47 (c) 19 (d) 67
  34. 34.Which number is the odd one out: 99, 83, 73, 67? (a) 99 (b) 83 (c) 73 (d) 67
  35. 35.Which number is the odd one out: 96, 8, 12, 23? (a) 96 (b) 8 (c) 12 (d) 23
  36. 36.Which number is the odd one out: 29, 3, 97, 72? (a) 29 (b) 3 (c) 97 (d) 72
  37. 37.Which number is the odd one out: 11, 91, 19, 13? (a) 11 (b) 91 (c) 19 (d) 13
  38. 38.Which number is the odd one out: 59, 67, 18, 61? (a) 59 (b) 67 (c) 18 (d) 61
  39. 39.Which number is the odd one out: 81, 92, 44, 68? (a) 81 (b) 92 (c) 44 (d) 68
  40. 40.Which number is the odd one out: 29, 32, 23, 61? (a) 29 (b) 32 (c) 23 (d) 61

Answer key

  1. 65
  2. 6
  3. 72
  4. 58
  5. 42
  6. 86
  7. 57
  8. 10
  9. 33
  10. 7
  11. 75
  12. 44
  13. 26
  14. 29
  15. 30
  16. 6
  17. 78
  18. 52
  19. 26
  20. 85
  21. 72
  22. 60
  23. 28
  24. 92
  25. 20
  26. 85
  27. 35
  28. 27
  29. 76
  30. 10
  31. 87
  32. 89
  33. 82
  34. 99
  35. 23
  36. 72
  37. 91
  38. 18
  39. 81
  40. 32

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