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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 571 · 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: 72, 37, 31, 11? (a) 72 (b) 37 (c) 31 (d) 11
  2. 2.Which number is the odd one out: 17, 43, 20, 11? (a) 17 (b) 43 (c) 20 (d) 11
  3. 3.Which number is the odd one out: 99, 89, 47, 31? (a) 99 (b) 89 (c) 47 (d) 31
  4. 4.Which number is the odd one out: 98, 79, 2, 29? (a) 98 (b) 79 (c) 2 (d) 29
  5. 5.Which number is the odd one out: 60, 30, 64, 50? (a) 60 (b) 30 (c) 64 (d) 50
  6. 6.Which number is the odd one out: 50, 83, 5, 89? (a) 50 (b) 83 (c) 5 (d) 89
  7. 7.Which number is the odd one out: 56, 89, 13, 61? (a) 56 (b) 89 (c) 13 (d) 61
  8. 8.Which number is the odd one out: 56, 98, 14, 64? (a) 56 (b) 98 (c) 14 (d) 64
  9. 9.Which number is the odd one out: 89, 46, 43, 29? (a) 89 (b) 46 (c) 43 (d) 29
  10. 10.Which number is the odd one out: 88, 56, 32, 84? (a) 88 (b) 56 (c) 32 (d) 84
  11. 11.Which number is the odd one out: 81, 13, 43, 3? (a) 81 (b) 13 (c) 43 (d) 3
  12. 12.Which number is the odd one out: 78, 19, 83, 29? (a) 78 (b) 19 (c) 83 (d) 29
  13. 13.Which number is the odd one out: 2, 59, 47, 18? (a) 2 (b) 59 (c) 47 (d) 18
  14. 14.Which number is the odd one out: 37, 23, 9, 71? (a) 37 (b) 23 (c) 9 (d) 71
  15. 15.Which number is the odd one out: 56, 88, 6, 84? (a) 56 (b) 88 (c) 6 (d) 84
  16. 16.Which number is the odd one out: 96, 88, 24, 94? (a) 96 (b) 88 (c) 24 (d) 94
  17. 17.Which number is the odd one out: 19, 40, 55, 59? (a) 19 (b) 40 (c) 55 (d) 59
  18. 18.Which number is the odd one out: 29, 13, 54, 23? (a) 29 (b) 13 (c) 54 (d) 23
  19. 19.Which number is the odd one out: 59, 82, 97, 61? (a) 59 (b) 82 (c) 97 (d) 61
  20. 20.Which number is the odd one out: 41, 45, 79, 83? (a) 41 (b) 45 (c) 79 (d) 83
  21. 21.Which number is the odd one out: 37, 24, 61, 2? (a) 37 (b) 24 (c) 61 (d) 2
  22. 22.Which number is the odd one out: 66, 18, 99, 59? (a) 66 (b) 18 (c) 99 (d) 59
  23. 23.Which number is the odd one out: 73, 25, 79, 97? (a) 73 (b) 25 (c) 79 (d) 97
  24. 24.Which number is the odd one out: 39, 33, 75, 95? (a) 39 (b) 33 (c) 75 (d) 95
  25. 25.Which number is the odd one out: 61, 71, 21, 43? (a) 61 (b) 71 (c) 21 (d) 43
  26. 26.Which number is the odd one out: 47, 43, 3, 15? (a) 47 (b) 43 (c) 3 (d) 15
  27. 27.Which number is the odd one out: 24, 72, 54, 96? (a) 24 (b) 72 (c) 54 (d) 96
  28. 28.Which number is the odd one out: 79, 67, 17, 85? (a) 79 (b) 67 (c) 17 (d) 85
  29. 29.Which number is the odd one out: 48, 24, 80, 5? (a) 48 (b) 24 (c) 80 (d) 5
  30. 30.Which number is the odd one out: 31, 19, 38, 59? (a) 31 (b) 19 (c) 38 (d) 59
  31. 31.Which number is the odd one out: 49, 42, 66, 93? (a) 49 (b) 42 (c) 66 (d) 93
  32. 32.Which number is the odd one out: 31, 73, 80, 17? (a) 31 (b) 73 (c) 80 (d) 17
  33. 33.Which number is the odd one out: 59, 86, 5, 95? (a) 59 (b) 86 (c) 5 (d) 95
  34. 34.Which number is the odd one out: 53, 22, 34, 62? (a) 53 (b) 22 (c) 34 (d) 62
  35. 35.Which number is the odd one out: 20, 50, 40, 80? (a) 20 (b) 50 (c) 40 (d) 80
  36. 36.Which number is the odd one out: 11, 24, 83, 47? (a) 11 (b) 24 (c) 83 (d) 47
  37. 37.Which number is the odd one out: 53, 47, 11, 14? (a) 53 (b) 47 (c) 11 (d) 14
  38. 38.Which number is the odd one out: 81, 9, 70, 25? (a) 81 (b) 9 (c) 70 (d) 25
  39. 39.Which number is the odd one out: 97, 89, 43, 76? (a) 97 (b) 89 (c) 43 (d) 76
  40. 40.Which number is the odd one out: 8, 48, 94, 12? (a) 8 (b) 48 (c) 94 (d) 12

Answer key

  1. 72
  2. 20
  3. 99
  4. 98
  5. 64
  6. 50
  7. 56
  8. 64
  9. 46
  10. 84
  11. 81
  12. 78
  13. 18
  14. 9
  15. 6
  16. 94
  17. 40
  18. 54
  19. 82
  20. 45
  21. 24
  22. 59
  23. 25
  24. 95
  25. 21
  26. 15
  27. 54
  28. 85
  29. 5
  30. 38
  31. 49
  32. 80
  33. 86
  34. 53
  35. 50
  36. 24
  37. 14
  38. 70
  39. 76
  40. 94

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