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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 210 · 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: 53, 21, 11, 7? (a) 53 (b) 21 (c) 11 (d) 7
  2. 2.Which number is the odd one out: 11, 53, 20, 59? (a) 11 (b) 53 (c) 20 (d) 59
  3. 3.Which number is the odd one out: 17, 47, 21, 23? (a) 17 (b) 47 (c) 21 (d) 23
  4. 4.Which number is the odd one out: 27, 19, 61, 13? (a) 27 (b) 19 (c) 61 (d) 13
  5. 5.Which number is the odd one out: 42, 91, 77, 12? (a) 42 (b) 91 (c) 77 (d) 12
  6. 6.Which number is the odd one out: 47, 80, 83, 11? (a) 47 (b) 80 (c) 83 (d) 11
  7. 7.Which number is the odd one out: 41, 6, 13, 37? (a) 41 (b) 6 (c) 13 (d) 37
  8. 8.Which number is the odd one out: 10, 5, 23, 11? (a) 10 (b) 5 (c) 23 (d) 11
  9. 9.Which number is the odd one out: 36, 79, 83, 53? (a) 36 (b) 79 (c) 83 (d) 53
  10. 10.Which number is the odd one out: 48, 37, 97, 11? (a) 48 (b) 37 (c) 97 (d) 11
  11. 11.Which number is the odd one out: 36, 71, 43, 83? (a) 36 (b) 71 (c) 43 (d) 83
  12. 12.Which number is the odd one out: 11, 92, 86, 76? (a) 11 (b) 92 (c) 86 (d) 76
  13. 13.Which number is the odd one out: 9, 11, 67, 17? (a) 9 (b) 11 (c) 67 (d) 17
  14. 14.Which number is the odd one out: 21, 42, 79, 78? (a) 21 (b) 42 (c) 79 (d) 78
  15. 15.Which number is the odd one out: 88, 91, 24, 96? (a) 88 (b) 91 (c) 24 (d) 96
  16. 16.Which number is the odd one out: 92, 83, 53, 61? (a) 92 (b) 83 (c) 53 (d) 61
  17. 17.Which number is the odd one out: 64, 25, 45, 16? (a) 64 (b) 25 (c) 45 (d) 16
  18. 18.Which number is the odd one out: 43, 19, 59, 46? (a) 43 (b) 19 (c) 59 (d) 46
  19. 19.Which number is the odd one out: 47, 60, 31, 37? (a) 47 (b) 60 (c) 31 (d) 37
  20. 20.Which number is the odd one out: 72, 79, 41, 3? (a) 72 (b) 79 (c) 41 (d) 3
  21. 21.Which number is the odd one out: 61, 47, 93, 83? (a) 61 (b) 47 (c) 93 (d) 83
  22. 22.Which number is the odd one out: 97, 90, 43, 89? (a) 97 (b) 90 (c) 43 (d) 89
  23. 23.Which number is the odd one out: 88, 75, 32, 8? (a) 88 (b) 75 (c) 32 (d) 8
  24. 24.Which number is the odd one out: 43, 77, 11, 53? (a) 43 (b) 77 (c) 11 (d) 53
  25. 25.Which number is the odd one out: 89, 53, 66, 19? (a) 89 (b) 53 (c) 66 (d) 19
  26. 26.Which number is the odd one out: 45, 32, 8, 88? (a) 45 (b) 32 (c) 8 (d) 88
  27. 27.Which number is the odd one out: 2, 10, 71, 13? (a) 2 (b) 10 (c) 71 (d) 13
  28. 28.Which number is the odd one out: 79, 84, 61, 47? (a) 79 (b) 84 (c) 61 (d) 47
  29. 29.Which number is the odd one out: 24, 18, 40, 80? (a) 24 (b) 18 (c) 40 (d) 80
  30. 30.Which number is the odd one out: 32, 72, 36, 64? (a) 32 (b) 72 (c) 36 (d) 64
  31. 31.Which number is the odd one out: 9, 13, 41, 29? (a) 9 (b) 13 (c) 41 (d) 29
  32. 32.Which number is the odd one out: 44, 59, 13, 19? (a) 44 (b) 59 (c) 13 (d) 19
  33. 33.Which number is the odd one out: 27, 78, 97, 18? (a) 27 (b) 78 (c) 97 (d) 18
  34. 34.Which number is the odd one out: 65, 48, 40, 96? (a) 65 (b) 48 (c) 40 (d) 96
  35. 35.Which number is the odd one out: 21, 23, 11, 31? (a) 21 (b) 23 (c) 11 (d) 31
  36. 36.Which number is the odd one out: 32, 24, 46, 12? (a) 32 (b) 24 (c) 46 (d) 12
  37. 37.Which number is the odd one out: 60, 5, 8, 48? (a) 60 (b) 5 (c) 8 (d) 48
  38. 38.Which number is the odd one out: 97, 71, 53, 18? (a) 97 (b) 71 (c) 53 (d) 18
  39. 39.Which number is the odd one out: 31, 82, 2, 13? (a) 31 (b) 82 (c) 2 (d) 13
  40. 40.Which number is the odd one out: 44, 47, 83, 31? (a) 44 (b) 47 (c) 83 (d) 31

Answer key

  1. 21
  2. 20
  3. 21
  4. 27
  5. 12
  6. 80
  7. 6
  8. 10
  9. 36
  10. 48
  11. 36
  12. 11
  13. 9
  14. 79
  15. 91
  16. 92
  17. 45
  18. 46
  19. 60
  20. 72
  21. 93
  22. 90
  23. 75
  24. 77
  25. 66
  26. 45
  27. 10
  28. 84
  29. 18
  30. 36
  31. 9
  32. 44
  33. 97
  34. 65
  35. 21
  36. 46
  37. 5
  38. 18
  39. 82
  40. 44

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