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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 780 · 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: 30, 17, 3, 83? (a) 30 (b) 17 (c) 3 (d) 83
  2. 2.Which number is the odd one out: 50, 44, 55, 65? (a) 50 (b) 44 (c) 55 (d) 65
  3. 3.Which number is the odd one out: 31, 4, 64, 16? (a) 31 (b) 4 (c) 64 (d) 16
  4. 4.Which number is the odd one out: 2, 58, 37, 41? (a) 2 (b) 58 (c) 37 (d) 41
  5. 5.Which number is the odd one out: 10, 61, 5, 73? (a) 10 (b) 61 (c) 5 (d) 73
  6. 6.Which number is the odd one out: 28, 73, 97, 89? (a) 28 (b) 73 (c) 97 (d) 89
  7. 7.Which number is the odd one out: 87, 80, 17, 3? (a) 87 (b) 80 (c) 17 (d) 3
  8. 8.Which number is the odd one out: 8, 30, 90, 18? (a) 8 (b) 30 (c) 90 (d) 18
  9. 9.Which number is the odd one out: 11, 60, 10, 12? (a) 11 (b) 60 (c) 10 (d) 12
  10. 10.Which number is the odd one out: 13, 32, 67, 47? (a) 13 (b) 32 (c) 67 (d) 47
  11. 11.Which number is the odd one out: 21, 31, 37, 41? (a) 21 (b) 31 (c) 37 (d) 41
  12. 12.Which number is the odd one out: 17, 40, 23, 83? (a) 17 (b) 40 (c) 23 (d) 83
  13. 13.Which number is the odd one out: 95, 86, 85, 55? (a) 95 (b) 86 (c) 85 (d) 55
  14. 14.Which number is the odd one out: 14, 13, 7, 17? (a) 14 (b) 13 (c) 7 (d) 17
  15. 15.Which number is the odd one out: 83, 78, 29, 47? (a) 83 (b) 78 (c) 29 (d) 47
  16. 16.Which number is the odd one out: 88, 32, 8, 27? (a) 88 (b) 32 (c) 8 (d) 27
  17. 17.Which number is the odd one out: 97, 15, 33, 75? (a) 97 (b) 15 (c) 33 (d) 75
  18. 18.Which number is the odd one out: 37, 23, 80, 11? (a) 37 (b) 23 (c) 80 (d) 11
  19. 19.Which number is the odd one out: 89, 53, 39, 96? (a) 89 (b) 53 (c) 39 (d) 96
  20. 20.Which number is the odd one out: 23, 19, 89, 85? (a) 23 (b) 19 (c) 89 (d) 85
  21. 21.Which number is the odd one out: 41, 72, 29, 71? (a) 41 (b) 72 (c) 29 (d) 71
  22. 22.Which number is the odd one out: 80, 85, 17, 23? (a) 80 (b) 85 (c) 17 (d) 23
  23. 23.Which number is the odd one out: 85, 38, 75, 39? (a) 85 (b) 38 (c) 75 (d) 39
  24. 24.Which number is the odd one out: 70, 83, 71, 17? (a) 70 (b) 83 (c) 71 (d) 17
  25. 25.Which number is the odd one out: 48, 12, 96, 45? (a) 48 (b) 12 (c) 96 (d) 45
  26. 26.Which number is the odd one out: 31, 66, 59, 51? (a) 31 (b) 66 (c) 59 (d) 51
  27. 27.Which number is the odd one out: 67, 17, 54, 2? (a) 67 (b) 17 (c) 54 (d) 2
  28. 28.Which number is the odd one out: 29, 65, 71, 17? (a) 29 (b) 65 (c) 71 (d) 17
  29. 29.Which number is the odd one out: 70, 83, 5, 17? (a) 70 (b) 83 (c) 5 (d) 17
  30. 30.Which number is the odd one out: 71, 5, 13, 40? (a) 71 (b) 5 (c) 13 (d) 40
  31. 31.Which number is the odd one out: 85, 29, 5, 31? (a) 85 (b) 29 (c) 5 (d) 31
  32. 32.Which number is the odd one out: 36, 9, 12, 81? (a) 36 (b) 9 (c) 12 (d) 81
  33. 33.Which number is the odd one out: 71, 67, 27, 59? (a) 71 (b) 67 (c) 27 (d) 59
  34. 34.Which number is the odd one out: 88, 75, 40, 15? (a) 88 (b) 75 (c) 40 (d) 15
  35. 35.Which number is the odd one out: 47, 31, 17, 33? (a) 47 (b) 31 (c) 17 (d) 33
  36. 36.Which number is the odd one out: 84, 79, 89, 73? (a) 84 (b) 79 (c) 89 (d) 73
  37. 37.Which number is the odd one out: 41, 10, 19, 83? (a) 41 (b) 10 (c) 19 (d) 83
  38. 38.Which number is the odd one out: 73, 18, 99, 54? (a) 73 (b) 18 (c) 99 (d) 54
  39. 39.Which number is the odd one out: 77, 88, 48, 24? (a) 77 (b) 88 (c) 48 (d) 24
  40. 40.Which number is the odd one out: 79, 75, 43, 59? (a) 79 (b) 75 (c) 43 (d) 59

Answer key

  1. 30
  2. 44
  3. 31
  4. 58
  5. 10
  6. 28
  7. 80
  8. 8
  9. 11
  10. 32
  11. 21
  12. 40
  13. 86
  14. 14
  15. 78
  16. 27
  17. 97
  18. 80
  19. 96
  20. 85
  21. 72
  22. 80
  23. 38
  24. 70
  25. 45
  26. 66
  27. 54
  28. 65
  29. 70
  30. 40
  31. 85
  32. 12
  33. 27
  34. 88
  35. 33
  36. 84
  37. 10
  38. 73
  39. 77
  40. 75

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