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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 349 · 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: 77, 21, 91, 45? (a) 77 (b) 21 (c) 91 (d) 45
  2. 2.Which number is the odd one out: 17, 79, 31, 30? (a) 17 (b) 79 (c) 31 (d) 30
  3. 3.Which number is the odd one out: 27, 81, 9, 34? (a) 27 (b) 81 (c) 9 (d) 34
  4. 4.Which number is the odd one out: 27, 93, 49, 63? (a) 27 (b) 93 (c) 49 (d) 63
  5. 5.Which number is the odd one out: 13, 43, 18, 47? (a) 13 (b) 43 (c) 18 (d) 47
  6. 6.Which number is the odd one out: 17, 73, 11, 58? (a) 17 (b) 73 (c) 11 (d) 58
  7. 7.Which number is the odd one out: 61, 59, 29, 4? (a) 61 (b) 59 (c) 29 (d) 4
  8. 8.Which number is the odd one out: 47, 26, 79, 41? (a) 47 (b) 26 (c) 79 (d) 41
  9. 9.Which number is the odd one out: 71, 18, 27, 59? (a) 71 (b) 18 (c) 27 (d) 59
  10. 10.Which number is the odd one out: 6, 21, 98, 77? (a) 6 (b) 21 (c) 98 (d) 77
  11. 11.Which number is the odd one out: 76, 48, 96, 98? (a) 76 (b) 48 (c) 96 (d) 98
  12. 12.Which number is the odd one out: 47, 23, 17, 48? (a) 47 (b) 23 (c) 17 (d) 48
  13. 13.Which number is the odd one out: 55, 20, 75, 24? (a) 55 (b) 20 (c) 75 (d) 24
  14. 14.Which number is the odd one out: 31, 5, 30, 53? (a) 31 (b) 5 (c) 30 (d) 53
  15. 15.Which number is the odd one out: 98, 85, 50, 65? (a) 98 (b) 85 (c) 50 (d) 65
  16. 16.Which number is the odd one out: 11, 30, 13, 83? (a) 11 (b) 30 (c) 13 (d) 83
  17. 17.Which number is the odd one out: 73, 59, 50, 31? (a) 73 (b) 59 (c) 50 (d) 31
  18. 18.Which number is the odd one out: 53, 80, 47, 19? (a) 53 (b) 80 (c) 47 (d) 19
  19. 19.Which number is the odd one out: 38, 31, 89, 43? (a) 38 (b) 31 (c) 89 (d) 43
  20. 20.Which number is the odd one out: 19, 29, 37, 14? (a) 19 (b) 29 (c) 37 (d) 14
  21. 21.Which number is the odd one out: 45, 18, 79, 90? (a) 45 (b) 18 (c) 79 (d) 90
  22. 22.Which number is the odd one out: 43, 58, 5, 85? (a) 43 (b) 58 (c) 5 (d) 85
  23. 23.Which number is the odd one out: 76, 96, 48, 58? (a) 76 (b) 96 (c) 48 (d) 58
  24. 24.Which number is the odd one out: 16, 4, 55, 64? (a) 16 (b) 4 (c) 55 (d) 64
  25. 25.Which number is the odd one out: 59, 13, 56, 73? (a) 59 (b) 13 (c) 56 (d) 73
  26. 26.Which number is the odd one out: 79, 89, 28, 41? (a) 79 (b) 89 (c) 28 (d) 41
  27. 27.Which number is the odd one out: 25, 29, 31, 23? (a) 25 (b) 29 (c) 31 (d) 23
  28. 28.Which number is the odd one out: 9, 58, 62, 82? (a) 9 (b) 58 (c) 62 (d) 82
  29. 29.Which number is the odd one out: 67, 47, 29, 40? (a) 67 (b) 47 (c) 29 (d) 40
  30. 30.Which number is the odd one out: 4, 49, 28, 77? (a) 4 (b) 49 (c) 28 (d) 77
  31. 31.Which number is the odd one out: 67, 51, 84, 23? (a) 67 (b) 51 (c) 84 (d) 23
  32. 32.Which number is the odd one out: 30, 53, 29, 2? (a) 30 (b) 53 (c) 29 (d) 2
  33. 33.Which number is the odd one out: 77, 49, 16, 56? (a) 77 (b) 49 (c) 16 (d) 56
  34. 34.Which number is the odd one out: 37, 73, 53, 4? (a) 37 (b) 73 (c) 53 (d) 4
  35. 35.Which number is the odd one out: 16, 52, 4, 64? (a) 16 (b) 52 (c) 4 (d) 64
  36. 36.Which number is the odd one out: 45, 96, 24, 90? (a) 45 (b) 96 (c) 24 (d) 90
  37. 37.Which number is the odd one out: 13, 73, 40, 53? (a) 13 (b) 73 (c) 40 (d) 53
  38. 38.Which number is the odd one out: 47, 64, 29, 2? (a) 47 (b) 64 (c) 29 (d) 2
  39. 39.Which number is the odd one out: 41, 79, 83, 25? (a) 41 (b) 79 (c) 83 (d) 25
  40. 40.Which number is the odd one out: 23, 79, 49, 11? (a) 23 (b) 79 (c) 49 (d) 11

Answer key

  1. 45
  2. 30
  3. 34
  4. 49
  5. 18
  6. 58
  7. 4
  8. 26
  9. 18
  10. 6
  11. 98
  12. 48
  13. 24
  14. 30
  15. 98
  16. 30
  17. 50
  18. 80
  19. 38
  20. 14
  21. 79
  22. 58
  23. 58
  24. 55
  25. 56
  26. 28
  27. 25
  28. 9
  29. 40
  30. 4
  31. 84
  32. 30
  33. 16
  34. 4
  35. 52
  36. 45
  37. 40
  38. 64
  39. 25
  40. 49

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