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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 165 · 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: 79, 53, 74, 31? (a) 79 (b) 53 (c) 74 (d) 31
  2. 2.Which number is the odd one out: 85, 47, 43, 23? (a) 85 (b) 47 (c) 43 (d) 23
  3. 3.Which number is the odd one out: 13, 47, 53, 21? (a) 13 (b) 47 (c) 53 (d) 21
  4. 4.Which number is the odd one out: 17, 73, 19, 94? (a) 17 (b) 73 (c) 19 (d) 94
  5. 5.Which number is the odd one out: 90, 60, 27, 99? (a) 90 (b) 60 (c) 27 (d) 99
  6. 6.Which number is the odd one out: 54, 23, 59, 3? (a) 54 (b) 23 (c) 59 (d) 3
  7. 7.Which number is the odd one out: 96, 92, 42, 56? (a) 96 (b) 92 (c) 42 (d) 56
  8. 8.Which number is the odd one out: 21, 97, 31, 83? (a) 21 (b) 97 (c) 31 (d) 83
  9. 9.Which number is the odd one out: 84, 96, 24, 14? (a) 84 (b) 96 (c) 24 (d) 14
  10. 10.Which number is the odd one out: 40, 37, 83, 43? (a) 40 (b) 37 (c) 83 (d) 43
  11. 11.Which number is the odd one out: 19, 22, 11, 59? (a) 19 (b) 22 (c) 11 (d) 59
  12. 12.Which number is the odd one out: 14, 79, 61, 19? (a) 14 (b) 79 (c) 61 (d) 19
  13. 13.Which number is the odd one out: 11, 61, 85, 37? (a) 11 (b) 61 (c) 85 (d) 37
  14. 14.Which number is the odd one out: 6, 73, 29, 83? (a) 6 (b) 73 (c) 29 (d) 83
  15. 15.Which number is the odd one out: 47, 37, 42, 23? (a) 47 (b) 37 (c) 42 (d) 23
  16. 16.Which number is the odd one out: 17, 41, 83, 9? (a) 17 (b) 41 (c) 83 (d) 9
  17. 17.Which number is the odd one out: 5, 29, 95, 23? (a) 5 (b) 29 (c) 95 (d) 23
  18. 18.Which number is the odd one out: 73, 56, 11, 19? (a) 73 (b) 56 (c) 11 (d) 19
  19. 19.Which number is the odd one out: 78, 18, 21, 54? (a) 78 (b) 18 (c) 21 (d) 54
  20. 20.Which number is the odd one out: 9, 81, 36, 60? (a) 9 (b) 81 (c) 36 (d) 60
  21. 21.Which number is the odd one out: 19, 2, 41, 67? (a) 19 (b) 2 (c) 41 (d) 67
  22. 22.Which number is the odd one out: 45, 54, 18, 55? (a) 45 (b) 54 (c) 18 (d) 55
  23. 23.Which number is the odd one out: 5, 47, 20, 19? (a) 5 (b) 47 (c) 20 (d) 19
  24. 24.Which number is the odd one out: 22, 41, 17, 31? (a) 22 (b) 41 (c) 17 (d) 31
  25. 25.Which number is the odd one out: 53, 21, 83, 47? (a) 53 (b) 21 (c) 83 (d) 47
  26. 26.Which number is the odd one out: 13, 19, 40, 73? (a) 13 (b) 19 (c) 40 (d) 73
  27. 27.Which number is the odd one out: 41, 47, 61, 93? (a) 41 (b) 47 (c) 61 (d) 93
  28. 28.Which number is the odd one out: 97, 36, 19, 2? (a) 97 (b) 36 (c) 19 (d) 2
  29. 29.Which number is the odd one out: 10, 43, 19, 83? (a) 10 (b) 43 (c) 19 (d) 83
  30. 30.Which number is the odd one out: 97, 19, 41, 34? (a) 97 (b) 19 (c) 41 (d) 34
  31. 31.Which number is the odd one out: 3, 47, 84, 97? (a) 3 (b) 47 (c) 84 (d) 97
  32. 32.Which number is the odd one out: 43, 19, 85, 11? (a) 43 (b) 19 (c) 85 (d) 11
  33. 33.Which number is the odd one out: 79, 83, 98, 43? (a) 79 (b) 83 (c) 98 (d) 43
  34. 34.Which number is the odd one out: 14, 79, 91, 23? (a) 14 (b) 79 (c) 91 (d) 23
  35. 35.Which number is the odd one out: 44, 92, 34, 65? (a) 44 (b) 92 (c) 34 (d) 65
  36. 36.Which number is the odd one out: 2, 68, 23, 11? (a) 2 (b) 68 (c) 23 (d) 11
  37. 37.Which number is the odd one out: 16, 40, 64, 95? (a) 16 (b) 40 (c) 64 (d) 95
  38. 38.Which number is the odd one out: 23, 61, 74, 59? (a) 23 (b) 61 (c) 74 (d) 59
  39. 39.Which number is the odd one out: 6, 38, 18, 54? (a) 6 (b) 38 (c) 18 (d) 54
  40. 40.Which number is the odd one out: 17, 71, 24, 47? (a) 17 (b) 71 (c) 24 (d) 47

Answer key

  1. 74
  2. 85
  3. 21
  4. 94
  5. 60
  6. 54
  7. 42
  8. 21
  9. 14
  10. 40
  11. 22
  12. 14
  13. 85
  14. 6
  15. 42
  16. 9
  17. 95
  18. 56
  19. 21
  20. 60
  21. 2
  22. 55
  23. 20
  24. 22
  25. 21
  26. 40
  27. 93
  28. 36
  29. 10
  30. 34
  31. 84
  32. 85
  33. 98
  34. 14
  35. 65
  36. 68
  37. 95
  38. 74
  39. 38
  40. 24

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