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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 618 · 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: 43, 82, 11, 19? (a) 43 (b) 82 (c) 11 (d) 19
  2. 2.Which number is the odd one out: 17, 83, 73, 72? (a) 17 (b) 83 (c) 73 (d) 72
  3. 3.Which number is the odd one out: 5, 78, 71, 15? (a) 5 (b) 78 (c) 71 (d) 15
  4. 4.Which number is the odd one out: 85, 7, 95, 65? (a) 85 (b) 7 (c) 95 (d) 65
  5. 5.Which number is the odd one out: 2, 60, 37, 31? (a) 2 (b) 60 (c) 37 (d) 31
  6. 6.Which number is the odd one out: 10, 54, 24, 72? (a) 10 (b) 54 (c) 24 (d) 72
  7. 7.Which number is the odd one out: 23, 53, 17, 42? (a) 23 (b) 53 (c) 17 (d) 42
  8. 8.Which number is the odd one out: 3, 41, 79, 33? (a) 3 (b) 41 (c) 79 (d) 33
  9. 9.Which number is the odd one out: 83, 47, 31, 6? (a) 83 (b) 47 (c) 31 (d) 6
  10. 10.Which number is the odd one out: 5, 23, 30, 67? (a) 5 (b) 23 (c) 30 (d) 67
  11. 11.Which number is the odd one out: 22, 59, 73, 29? (a) 22 (b) 59 (c) 73 (d) 29
  12. 12.Which number is the odd one out: 17, 7, 59, 63? (a) 17 (b) 7 (c) 59 (d) 63
  13. 13.Which number is the odd one out: 71, 53, 8, 19? (a) 71 (b) 53 (c) 8 (d) 19
  14. 14.Which number is the odd one out: 85, 17, 83, 73? (a) 85 (b) 17 (c) 83 (d) 73
  15. 15.Which number is the odd one out: 3, 67, 87, 58? (a) 3 (b) 67 (c) 87 (d) 58
  16. 16.Which number is the odd one out: 54, 61, 23, 37? (a) 54 (b) 61 (c) 23 (d) 37
  17. 17.Which number is the odd one out: 91, 5, 14, 70? (a) 91 (b) 5 (c) 14 (d) 70
  18. 18.Which number is the odd one out: 57, 53, 29, 84? (a) 57 (b) 53 (c) 29 (d) 84
  19. 19.Which number is the odd one out: 96, 81, 99, 9? (a) 96 (b) 81 (c) 99 (d) 9
  20. 20.Which number is the odd one out: 13, 71, 19, 35? (a) 13 (b) 71 (c) 19 (d) 35
  21. 21.Which number is the odd one out: 50, 45, 99, 27? (a) 50 (b) 45 (c) 99 (d) 27
  22. 22.Which number is the odd one out: 20, 89, 31, 59? (a) 20 (b) 89 (c) 31 (d) 59
  23. 23.Which number is the odd one out: 17, 11, 14, 97? (a) 17 (b) 11 (c) 14 (d) 97
  24. 24.Which number is the odd one out: 83, 37, 8, 11? (a) 83 (b) 37 (c) 8 (d) 11
  25. 25.Which number is the odd one out: 72, 59, 3, 79? (a) 72 (b) 59 (c) 3 (d) 79
  26. 26.Which number is the odd one out: 95, 50, 55, 12? (a) 95 (b) 50 (c) 55 (d) 12
  27. 27.Which number is the odd one out: 95, 90, 31, 53? (a) 95 (b) 90 (c) 31 (d) 53
  28. 28.Which number is the odd one out: 86, 17, 74, 58? (a) 86 (b) 17 (c) 74 (d) 58
  29. 29.Which number is the odd one out: 79, 47, 96, 71? (a) 79 (b) 47 (c) 96 (d) 71
  30. 30.Which number is the odd one out: 27, 4, 64, 16? (a) 27 (b) 4 (c) 64 (d) 16
  31. 31.Which number is the odd one out: 71, 20, 13, 41? (a) 71 (b) 20 (c) 13 (d) 41
  32. 32.Which number is the odd one out: 54, 90, 41, 50? (a) 54 (b) 90 (c) 41 (d) 50
  33. 33.Which number is the odd one out: 72, 90, 65, 48? (a) 72 (b) 90 (c) 65 (d) 48
  34. 34.Which number is the odd one out: 53, 70, 97, 19? (a) 53 (b) 70 (c) 97 (d) 19
  35. 35.Which number is the odd one out: 79, 69, 61, 13? (a) 79 (b) 69 (c) 61 (d) 13
  36. 36.Which number is the odd one out: 23, 97, 61, 36? (a) 23 (b) 97 (c) 61 (d) 36
  37. 37.Which number is the odd one out: 12, 25, 36, 54? (a) 12 (b) 25 (c) 36 (d) 54
  38. 38.Which number is the odd one out: 61, 83, 30, 47? (a) 61 (b) 83 (c) 30 (d) 47
  39. 39.Which number is the odd one out: 30, 27, 81, 9? (a) 30 (b) 27 (c) 81 (d) 9
  40. 40.Which number is the odd one out: 79, 29, 68, 2? (a) 79 (b) 29 (c) 68 (d) 2

Answer key

  1. 82
  2. 72
  3. 78
  4. 7
  5. 60
  6. 10
  7. 42
  8. 33
  9. 6
  10. 30
  11. 22
  12. 63
  13. 8
  14. 85
  15. 58
  16. 54
  17. 5
  18. 84
  19. 96
  20. 35
  21. 50
  22. 20
  23. 14
  24. 8
  25. 72
  26. 12
  27. 90
  28. 17
  29. 96
  30. 27
  31. 20
  32. 41
  33. 65
  34. 70
  35. 69
  36. 36
  37. 25
  38. 30
  39. 30
  40. 68

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