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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 373 · 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: 61, 79, 14, 43? (a) 61 (b) 79 (c) 14 (d) 43
  2. 2.Which number is the odd one out: 53, 90, 47, 5? (a) 53 (b) 90 (c) 47 (d) 5
  3. 3.Which number is the odd one out: 17, 61, 70, 31? (a) 17 (b) 61 (c) 70 (d) 31
  4. 4.Which number is the odd one out: 10, 24, 48, 32? (a) 10 (b) 24 (c) 48 (d) 32
  5. 5.Which number is the odd one out: 40, 8, 90, 32? (a) 40 (b) 8 (c) 90 (d) 32
  6. 6.Which number is the odd one out: 98, 8, 24, 96? (a) 98 (b) 8 (c) 24 (d) 96
  7. 7.Which number is the odd one out: 59, 11, 6, 31? (a) 59 (b) 11 (c) 6 (d) 31
  8. 8.Which number is the odd one out: 13, 97, 89, 25? (a) 13 (b) 97 (c) 89 (d) 25
  9. 9.Which number is the odd one out: 67, 68, 19, 73? (a) 67 (b) 68 (c) 19 (d) 73
  10. 10.Which number is the odd one out: 51, 18, 69, 27? (a) 51 (b) 18 (c) 69 (d) 27
  11. 11.Which number is the odd one out: 9, 80, 76, 40? (a) 9 (b) 80 (c) 76 (d) 40
  12. 12.Which number is the odd one out: 77, 7, 3, 21? (a) 77 (b) 7 (c) 3 (d) 21
  13. 13.Which number is the odd one out: 23, 34, 43, 11? (a) 23 (b) 34 (c) 43 (d) 11
  14. 14.Which number is the odd one out: 29, 42, 59, 17? (a) 29 (b) 42 (c) 59 (d) 17
  15. 15.Which number is the odd one out: 40, 4, 15, 16? (a) 40 (b) 4 (c) 15 (d) 16
  16. 16.Which number is the odd one out: 50, 97, 89, 19? (a) 50 (b) 97 (c) 89 (d) 19
  17. 17.Which number is the odd one out: 68, 83, 41, 43? (a) 68 (b) 83 (c) 41 (d) 43
  18. 18.Which number is the odd one out: 37, 66, 97, 79? (a) 37 (b) 66 (c) 97 (d) 79
  19. 19.Which number is the odd one out: 31, 53, 24, 17? (a) 31 (b) 53 (c) 24 (d) 17
  20. 20.Which number is the odd one out: 2, 7, 83, 98? (a) 2 (b) 7 (c) 83 (d) 98
  21. 21.Which number is the odd one out: 17, 34, 73, 19? (a) 17 (b) 34 (c) 73 (d) 19
  22. 22.Which number is the odd one out: 13, 90, 71, 23? (a) 13 (b) 90 (c) 71 (d) 23
  23. 23.Which number is the odd one out: 27, 15, 18, 90? (a) 27 (b) 15 (c) 18 (d) 90
  24. 24.Which number is the odd one out: 71, 29, 41, 87? (a) 71 (b) 29 (c) 41 (d) 87
  25. 25.Which number is the odd one out: 57, 80, 87, 93? (a) 57 (b) 80 (c) 87 (d) 93
  26. 26.Which number is the odd one out: 11, 59, 85, 83? (a) 11 (b) 59 (c) 85 (d) 83
  27. 27.Which number is the odd one out: 88, 96, 55, 24? (a) 88 (b) 96 (c) 55 (d) 24
  28. 28.Which number is the odd one out: 37, 31, 42, 79? (a) 37 (b) 31 (c) 42 (d) 79
  29. 29.Which number is the odd one out: 40, 11, 41, 65? (a) 40 (b) 11 (c) 41 (d) 65
  30. 30.Which number is the odd one out: 83, 37, 60, 97? (a) 83 (b) 37 (c) 60 (d) 97
  31. 31.Which number is the odd one out: 63, 24, 72, 6? (a) 63 (b) 24 (c) 72 (d) 6
  32. 32.Which number is the odd one out: 9, 39, 81, 73? (a) 9 (b) 39 (c) 81 (d) 73
  33. 33.Which number is the odd one out: 64, 16, 95, 4? (a) 64 (b) 16 (c) 95 (d) 4
  34. 34.Which number is the odd one out: 79, 24, 96, 12? (a) 79 (b) 24 (c) 96 (d) 12
  35. 35.Which number is the odd one out: 67, 11, 8, 19? (a) 67 (b) 11 (c) 8 (d) 19
  36. 36.Which number is the odd one out: 86, 58, 61, 74? (a) 86 (b) 58 (c) 61 (d) 74
  37. 37.Which number is the odd one out: 70, 43, 98, 35? (a) 70 (b) 43 (c) 98 (d) 35
  38. 38.Which number is the odd one out: 49, 47, 23, 59? (a) 49 (b) 47 (c) 23 (d) 59
  39. 39.Which number is the odd one out: 20, 61, 13, 19? (a) 20 (b) 61 (c) 13 (d) 19
  40. 40.Which number is the odd one out: 59, 97, 13, 76? (a) 59 (b) 97 (c) 13 (d) 76

Answer key

  1. 14
  2. 90
  3. 70
  4. 10
  5. 90
  6. 98
  7. 6
  8. 25
  9. 68
  10. 18
  11. 9
  12. 3
  13. 34
  14. 42
  15. 15
  16. 50
  17. 68
  18. 66
  19. 24
  20. 98
  21. 34
  22. 90
  23. 15
  24. 87
  25. 80
  26. 85
  27. 55
  28. 42
  29. 40
  30. 60
  31. 63
  32. 73
  33. 95
  34. 79
  35. 8
  36. 61
  37. 43
  38. 49
  39. 20
  40. 76

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