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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 544 · 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: 8, 41, 31, 13? (a) 8 (b) 41 (c) 31 (d) 13
  2. 2.Which number is the odd one out: 60, 8, 32, 48? (a) 60 (b) 8 (c) 32 (d) 48
  3. 3.Which number is the odd one out: 21, 59, 79, 89? (a) 21 (b) 59 (c) 79 (d) 89
  4. 4.Which number is the odd one out: 16, 36, 85, 72? (a) 16 (b) 36 (c) 85 (d) 72
  5. 5.Which number is the odd one out: 18, 62, 90, 85? (a) 18 (b) 62 (c) 90 (d) 85
  6. 6.Which number is the odd one out: 73, 43, 92, 19? (a) 73 (b) 43 (c) 92 (d) 19
  7. 7.Which number is the odd one out: 23, 21, 97, 71? (a) 23 (b) 21 (c) 97 (d) 71
  8. 8.Which number is the odd one out: 14, 21, 77, 30? (a) 14 (b) 21 (c) 77 (d) 30
  9. 9.Which number is the odd one out: 31, 94, 89, 11? (a) 31 (b) 94 (c) 89 (d) 11
  10. 10.Which number is the odd one out: 89, 97, 37, 94? (a) 89 (b) 97 (c) 37 (d) 94
  11. 11.Which number is the odd one out: 97, 41, 44, 19? (a) 97 (b) 41 (c) 44 (d) 19
  12. 12.Which number is the odd one out: 40, 24, 42, 80? (a) 40 (b) 24 (c) 42 (d) 80
  13. 13.Which number is the odd one out: 17, 81, 53, 37? (a) 17 (b) 81 (c) 53 (d) 37
  14. 14.Which number is the odd one out: 80, 20, 19, 88? (a) 80 (b) 20 (c) 19 (d) 88
  15. 15.Which number is the odd one out: 85, 43, 67, 53? (a) 85 (b) 43 (c) 67 (d) 53
  16. 16.Which number is the odd one out: 29, 43, 61, 34? (a) 29 (b) 43 (c) 61 (d) 34
  17. 17.Which number is the odd one out: 22, 86, 82, 89? (a) 22 (b) 86 (c) 82 (d) 89
  18. 18.Which number is the odd one out: 47, 27, 73, 90? (a) 47 (b) 27 (c) 73 (d) 90
  19. 19.Which number is the odd one out: 24, 67, 43, 97? (a) 24 (b) 67 (c) 43 (d) 97
  20. 20.Which number is the odd one out: 17, 53, 89, 86? (a) 17 (b) 53 (c) 89 (d) 86
  21. 21.Which number is the odd one out: 71, 35, 59, 61? (a) 71 (b) 35 (c) 59 (d) 61
  22. 22.Which number is the odd one out: 23, 88, 12, 48? (a) 23 (b) 88 (c) 12 (d) 48
  23. 23.Which number is the odd one out: 24, 96, 45, 90? (a) 24 (b) 96 (c) 45 (d) 90
  24. 24.Which number is the odd one out: 11, 2, 18, 53? (a) 11 (b) 2 (c) 18 (d) 53
  25. 25.Which number is the odd one out: 37, 13, 33, 11? (a) 37 (b) 13 (c) 33 (d) 11
  26. 26.Which number is the odd one out: 12, 48, 24, 19? (a) 12 (b) 48 (c) 24 (d) 19
  27. 27.Which number is the odd one out: 78, 30, 40, 66? (a) 78 (b) 30 (c) 40 (d) 66
  28. 28.Which number is the odd one out: 89, 79, 39, 47? (a) 89 (b) 79 (c) 39 (d) 47
  29. 29.Which number is the odd one out: 41, 23, 97, 62? (a) 41 (b) 23 (c) 97 (d) 62
  30. 30.Which number is the odd one out: 61, 70, 67, 43? (a) 61 (b) 70 (c) 67 (d) 43
  31. 31.Which number is the odd one out: 71, 22, 17, 41? (a) 71 (b) 22 (c) 17 (d) 41
  32. 32.Which number is the odd one out: 87, 2, 69, 11? (a) 87 (b) 2 (c) 69 (d) 11
  33. 33.Which number is the odd one out: 75, 27, 90, 54? (a) 75 (b) 27 (c) 90 (d) 54
  34. 34.Which number is the odd one out: 73, 69, 89, 12? (a) 73 (b) 69 (c) 89 (d) 12
  35. 35.Which number is the odd one out: 23, 8, 67, 11? (a) 23 (b) 8 (c) 67 (d) 11
  36. 36.Which number is the odd one out: 53, 79, 66, 23? (a) 53 (b) 79 (c) 66 (d) 23
  37. 37.Which number is the odd one out: 71, 67, 62, 29? (a) 71 (b) 67 (c) 62 (d) 29
  38. 38.Which number is the odd one out: 26, 17, 73, 59? (a) 26 (b) 17 (c) 73 (d) 59
  39. 39.Which number is the odd one out: 89, 31, 23, 9? (a) 89 (b) 31 (c) 23 (d) 9
  40. 40.Which number is the odd one out: 9, 64, 32, 8? (a) 9 (b) 64 (c) 32 (d) 8

Answer key

  1. 8
  2. 60
  3. 21
  4. 85
  5. 85
  6. 92
  7. 21
  8. 30
  9. 94
  10. 94
  11. 44
  12. 42
  13. 81
  14. 19
  15. 85
  16. 34
  17. 89
  18. 90
  19. 24
  20. 86
  21. 35
  22. 23
  23. 45
  24. 18
  25. 33
  26. 19
  27. 40
  28. 39
  29. 62
  30. 70
  31. 22
  32. 2
  33. 75
  34. 12
  35. 8
  36. 66
  37. 62
  38. 26
  39. 9
  40. 9

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