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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 468 · 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: 48, 81, 96, 24? (a) 48 (b) 81 (c) 96 (d) 24
  2. 2.Which number is the odd one out: 40, 16, 9, 81? (a) 40 (b) 16 (c) 9 (d) 81
  3. 3.Which number is the odd one out: 55, 41, 17, 43? (a) 55 (b) 41 (c) 17 (d) 43
  4. 4.Which number is the odd one out: 3, 31, 90, 97? (a) 3 (b) 31 (c) 90 (d) 97
  5. 5.Which number is the odd one out: 97, 22, 61, 89? (a) 97 (b) 22 (c) 61 (d) 89
  6. 6.Which number is the odd one out: 45, 39, 90, 51? (a) 45 (b) 39 (c) 90 (d) 51
  7. 7.Which number is the odd one out: 30, 78, 66, 5? (a) 30 (b) 78 (c) 66 (d) 5
  8. 8.Which number is the odd one out: 65, 5, 13, 34? (a) 65 (b) 5 (c) 13 (d) 34
  9. 9.Which number is the odd one out: 7, 21, 43, 83? (a) 7 (b) 21 (c) 43 (d) 83
  10. 10.Which number is the odd one out: 55, 31, 61, 30? (a) 55 (b) 31 (c) 61 (d) 30
  11. 11.Which number is the odd one out: 47, 44, 19, 29? (a) 47 (b) 44 (c) 19 (d) 29
  12. 12.Which number is the odd one out: 37, 97, 29, 95? (a) 37 (b) 97 (c) 29 (d) 95
  13. 13.Which number is the odd one out: 11, 23, 40, 59? (a) 11 (b) 23 (c) 40 (d) 59
  14. 14.Which number is the odd one out: 17, 15, 23, 97? (a) 17 (b) 15 (c) 23 (d) 97
  15. 15.Which number is the odd one out: 54, 80, 18, 90? (a) 54 (b) 80 (c) 18 (d) 90
  16. 16.Which number is the odd one out: 16, 71, 89, 11? (a) 16 (b) 71 (c) 89 (d) 11
  17. 17.Which number is the odd one out: 10, 17, 61, 19? (a) 10 (b) 17 (c) 61 (d) 19
  18. 18.Which number is the odd one out: 30, 40, 48, 88? (a) 30 (b) 40 (c) 48 (d) 88
  19. 19.Which number is the odd one out: 19, 13, 53, 58? (a) 19 (b) 13 (c) 53 (d) 58
  20. 20.Which number is the odd one out: 97, 37, 73, 15? (a) 97 (b) 37 (c) 73 (d) 15
  21. 21.Which number is the odd one out: 71, 24, 2, 37? (a) 71 (b) 24 (c) 2 (d) 37
  22. 22.Which number is the odd one out: 47, 23, 53, 68? (a) 47 (b) 23 (c) 53 (d) 68
  23. 23.Which number is the odd one out: 11, 23, 37, 91? (a) 11 (b) 23 (c) 37 (d) 91
  24. 24.Which number is the odd one out: 13, 19, 20, 2? (a) 13 (b) 19 (c) 20 (d) 2
  25. 25.Which number is the odd one out: 31, 19, 53, 15? (a) 31 (b) 19 (c) 53 (d) 15
  26. 26.Which number is the odd one out: 70, 97, 83, 73? (a) 70 (b) 97 (c) 83 (d) 73
  27. 27.Which number is the odd one out: 51, 15, 25, 33? (a) 51 (b) 15 (c) 25 (d) 33
  28. 28.Which number is the odd one out: 20, 66, 12, 6? (a) 20 (b) 66 (c) 12 (d) 6
  29. 29.Which number is the odd one out: 33, 57, 10, 87? (a) 33 (b) 57 (c) 10 (d) 87
  30. 30.Which number is the odd one out: 61, 52, 19, 47? (a) 61 (b) 52 (c) 19 (d) 47
  31. 31.Which number is the odd one out: 75, 3, 85, 65? (a) 75 (b) 3 (c) 85 (d) 65
  32. 32.Which number is the odd one out: 40, 2, 88, 80? (a) 40 (b) 2 (c) 88 (d) 80
  33. 33.Which number is the odd one out: 20, 73, 79, 37? (a) 20 (b) 73 (c) 79 (d) 37
  34. 34.Which number is the odd one out: 53, 33, 37, 73? (a) 53 (b) 33 (c) 37 (d) 73
  35. 35.Which number is the odd one out: 55, 48, 32, 24? (a) 55 (b) 48 (c) 32 (d) 24
  36. 36.Which number is the odd one out: 97, 11, 59, 18? (a) 97 (b) 11 (c) 59 (d) 18
  37. 37.Which number is the odd one out: 83, 2, 59, 74? (a) 83 (b) 2 (c) 59 (d) 74
  38. 38.Which number is the odd one out: 27, 67, 13, 43? (a) 27 (b) 67 (c) 13 (d) 43
  39. 39.Which number is the odd one out: 5, 71, 80, 2? (a) 5 (b) 71 (c) 80 (d) 2
  40. 40.Which number is the odd one out: 89, 70, 71, 37? (a) 89 (b) 70 (c) 71 (d) 37

Answer key

  1. 81
  2. 40
  3. 55
  4. 90
  5. 22
  6. 90
  7. 5
  8. 34
  9. 21
  10. 30
  11. 44
  12. 95
  13. 40
  14. 15
  15. 80
  16. 16
  17. 10
  18. 30
  19. 58
  20. 15
  21. 24
  22. 68
  23. 91
  24. 20
  25. 15
  26. 70
  27. 25
  28. 20
  29. 10
  30. 52
  31. 3
  32. 2
  33. 20
  34. 33
  35. 55
  36. 18
  37. 74
  38. 27
  39. 80
  40. 70

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