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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 943 · 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: 27, 54, 57, 18? (a) 27 (b) 54 (c) 57 (d) 18
  2. 2.Which number is the odd one out: 97, 68, 79, 19? (a) 97 (b) 68 (c) 79 (d) 19
  3. 3.Which number is the odd one out: 73, 93, 43, 60? (a) 73 (b) 93 (c) 43 (d) 60
  4. 4.Which number is the odd one out: 6, 73, 2, 19? (a) 6 (b) 73 (c) 2 (d) 19
  5. 5.Which number is the odd one out: 24, 30, 8, 32? (a) 24 (b) 30 (c) 8 (d) 32
  6. 6.Which number is the odd one out: 40, 80, 64, 9? (a) 40 (b) 80 (c) 64 (d) 9
  7. 7.Which number is the odd one out: 66, 47, 43, 71? (a) 66 (b) 47 (c) 43 (d) 71
  8. 8.Which number is the odd one out: 23, 48, 87, 19? (a) 23 (b) 48 (c) 87 (d) 19
  9. 9.Which number is the odd one out: 81, 12, 24, 48? (a) 81 (b) 12 (c) 24 (d) 48
  10. 10.Which number is the odd one out: 17, 13, 97, 84? (a) 17 (b) 13 (c) 97 (d) 84
  11. 11.Which number is the odd one out: 69, 29, 31, 18? (a) 69 (b) 29 (c) 31 (d) 18
  12. 12.Which number is the odd one out: 44, 7, 28, 92? (a) 44 (b) 7 (c) 28 (d) 92
  13. 13.Which number is the odd one out: 44, 68, 34, 45? (a) 44 (b) 68 (c) 34 (d) 45
  14. 14.Which number is the odd one out: 70, 29, 19, 37? (a) 70 (b) 29 (c) 19 (d) 37
  15. 15.Which number is the odd one out: 44, 31, 47, 89? (a) 44 (b) 31 (c) 47 (d) 89
  16. 16.Which number is the odd one out: 31, 53, 14, 61? (a) 31 (b) 53 (c) 14 (d) 61
  17. 17.Which number is the odd one out: 83, 17, 26, 19? (a) 83 (b) 17 (c) 26 (d) 19
  18. 18.Which number is the odd one out: 67, 53, 36, 83? (a) 67 (b) 53 (c) 36 (d) 83
  19. 19.Which number is the odd one out: 61, 17, 59, 34? (a) 61 (b) 17 (c) 59 (d) 34
  20. 20.Which number is the odd one out: 11, 59, 41, 42? (a) 11 (b) 59 (c) 41 (d) 42
  21. 21.Which number is the odd one out: 53, 59, 96, 97? (a) 53 (b) 59 (c) 96 (d) 97
  22. 22.Which number is the odd one out: 27, 90, 97, 30? (a) 27 (b) 90 (c) 97 (d) 30
  23. 23.Which number is the odd one out: 6, 84, 78, 56? (a) 6 (b) 84 (c) 78 (d) 56
  24. 24.Which number is the odd one out: 29, 43, 14, 31? (a) 29 (b) 43 (c) 14 (d) 31
  25. 25.Which number is the odd one out: 67, 43, 58, 61? (a) 67 (b) 43 (c) 58 (d) 61
  26. 26.Which number is the odd one out: 41, 90, 27, 79? (a) 41 (b) 90 (c) 27 (d) 79
  27. 27.Which number is the odd one out: 6, 17, 53, 43? (a) 6 (b) 17 (c) 53 (d) 43
  28. 28.Which number is the odd one out: 45, 89, 17, 67? (a) 45 (b) 89 (c) 17 (d) 67
  29. 29.Which number is the odd one out: 86, 34, 5, 46? (a) 86 (b) 34 (c) 5 (d) 46
  30. 30.Which number is the odd one out: 29, 31, 40, 41? (a) 29 (b) 31 (c) 40 (d) 41
  31. 31.Which number is the odd one out: 80, 5, 8, 32? (a) 80 (b) 5 (c) 8 (d) 32
  32. 32.Which number is the odd one out: 9, 61, 43, 29? (a) 9 (b) 61 (c) 43 (d) 29
  33. 33.Which number is the odd one out: 97, 67, 87, 13? (a) 97 (b) 67 (c) 87 (d) 13
  34. 34.Which number is the odd one out: 56, 67, 73, 61? (a) 56 (b) 67 (c) 73 (d) 61
  35. 35.Which number is the odd one out: 75, 24, 95, 55? (a) 75 (b) 24 (c) 95 (d) 55
  36. 36.Which number is the odd one out: 30, 89, 18, 90? (a) 30 (b) 89 (c) 18 (d) 90
  37. 37.Which number is the odd one out: 93, 73, 31, 19? (a) 93 (b) 73 (c) 31 (d) 19
  38. 38.Which number is the odd one out: 79, 48, 53, 11? (a) 79 (b) 48 (c) 53 (d) 11
  39. 39.Which number is the odd one out: 95, 79, 60, 71? (a) 95 (b) 79 (c) 60 (d) 71
  40. 40.Which number is the odd one out: 71, 99, 79, 43? (a) 71 (b) 99 (c) 79 (d) 43

Answer key

  1. 57
  2. 68
  3. 60
  4. 6
  5. 30
  6. 9
  7. 66
  8. 48
  9. 81
  10. 84
  11. 18
  12. 7
  13. 45
  14. 70
  15. 44
  16. 14
  17. 26
  18. 36
  19. 34
  20. 42
  21. 96
  22. 97
  23. 56
  24. 14
  25. 58
  26. 90
  27. 6
  28. 45
  29. 5
  30. 40
  31. 5
  32. 9
  33. 87
  34. 56
  35. 24
  36. 89
  37. 93
  38. 48
  39. 60
  40. 99

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