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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 400 · 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: 6, 18, 2, 54? (a) 6 (b) 18 (c) 2 (d) 54
  2. 2.Which number is the odd one out: 71, 79, 29, 93? (a) 71 (b) 79 (c) 29 (d) 93
  3. 3.Which number is the odd one out: 69, 41, 29, 43? (a) 69 (b) 41 (c) 29 (d) 43
  4. 4.Which number is the odd one out: 18, 45, 54, 25? (a) 18 (b) 45 (c) 54 (d) 25
  5. 5.Which number is the odd one out: 90, 47, 30, 54? (a) 90 (b) 47 (c) 30 (d) 54
  6. 6.Which number is the odd one out: 89, 94, 31, 2? (a) 89 (b) 94 (c) 31 (d) 2
  7. 7.Which number is the odd one out: 11, 31, 4, 97? (a) 11 (b) 31 (c) 4 (d) 97
  8. 8.Which number is the odd one out: 23, 75, 41, 79? (a) 23 (b) 75 (c) 41 (d) 79
  9. 9.Which number is the odd one out: 11, 79, 97, 44? (a) 11 (b) 79 (c) 97 (d) 44
  10. 10.Which number is the odd one out: 18, 31, 29, 67? (a) 18 (b) 31 (c) 29 (d) 67
  11. 11.Which number is the odd one out: 51, 53, 73, 23? (a) 51 (b) 53 (c) 73 (d) 23
  12. 12.Which number is the odd one out: 31, 83, 90, 17? (a) 31 (b) 83 (c) 90 (d) 17
  13. 13.Which number is the odd one out: 54, 72, 96, 97? (a) 54 (b) 72 (c) 96 (d) 97
  14. 14.Which number is the odd one out: 45, 37, 23, 43? (a) 45 (b) 37 (c) 23 (d) 43
  15. 15.Which number is the odd one out: 46, 41, 23, 61? (a) 46 (b) 41 (c) 23 (d) 61
  16. 16.Which number is the odd one out: 79, 41, 29, 49? (a) 79 (b) 41 (c) 29 (d) 49
  17. 17.Which number is the odd one out: 13, 56, 79, 17? (a) 13 (b) 56 (c) 79 (d) 17
  18. 18.Which number is the odd one out: 19, 46, 31, 89? (a) 19 (b) 46 (c) 31 (d) 89
  19. 19.Which number is the odd one out: 45, 90, 17, 18? (a) 45 (b) 90 (c) 17 (d) 18
  20. 20.Which number is the odd one out: 13, 17, 24, 67? (a) 13 (b) 17 (c) 24 (d) 67
  21. 21.Which number is the odd one out: 43, 30, 79, 47? (a) 43 (b) 30 (c) 79 (d) 47
  22. 22.Which number is the odd one out: 43, 73, 19, 56? (a) 43 (b) 73 (c) 19 (d) 56
  23. 23.Which number is the odd one out: 17, 19, 61, 62? (a) 17 (b) 19 (c) 61 (d) 62
  24. 24.Which number is the odd one out: 70, 5, 83, 37? (a) 70 (b) 5 (c) 83 (d) 37
  25. 25.Which number is the odd one out: 14, 21, 98, 69? (a) 14 (b) 21 (c) 98 (d) 69
  26. 26.Which number is the odd one out: 5, 37, 17, 20? (a) 5 (b) 37 (c) 17 (d) 20
  27. 27.Which number is the odd one out: 21, 23, 71, 83? (a) 21 (b) 23 (c) 71 (d) 83
  28. 28.Which number is the odd one out: 19, 71, 83, 56? (a) 19 (b) 71 (c) 83 (d) 56
  29. 29.Which number is the odd one out: 89, 33, 47, 11? (a) 89 (b) 33 (c) 47 (d) 11
  30. 30.Which number is the odd one out: 47, 17, 14, 73? (a) 47 (b) 17 (c) 14 (d) 73
  31. 31.Which number is the odd one out: 17, 53, 91, 73? (a) 17 (b) 53 (c) 91 (d) 73
  32. 32.Which number is the odd one out: 47, 2, 94, 11? (a) 47 (b) 2 (c) 94 (d) 11
  33. 33.Which number is the odd one out: 48, 88, 96, 67? (a) 48 (b) 88 (c) 96 (d) 67
  34. 34.Which number is the odd one out: 96, 80, 60, 89? (a) 96 (b) 80 (c) 60 (d) 89
  35. 35.Which number is the odd one out: 4, 16, 51, 64? (a) 4 (b) 16 (c) 51 (d) 64
  36. 36.Which number is the odd one out: 23, 14, 67, 29? (a) 23 (b) 14 (c) 67 (d) 29
  37. 37.Which number is the odd one out: 11, 71, 67, 21? (a) 11 (b) 71 (c) 67 (d) 21
  38. 38.Which number is the odd one out: 97, 13, 62, 29? (a) 97 (b) 13 (c) 62 (d) 29
  39. 39.Which number is the odd one out: 27, 11, 37, 61? (a) 27 (b) 11 (c) 37 (d) 61
  40. 40.Which number is the odd one out: 9, 27, 81, 95? (a) 9 (b) 27 (c) 81 (d) 95

Answer key

  1. 2
  2. 93
  3. 69
  4. 25
  5. 47
  6. 94
  7. 4
  8. 75
  9. 44
  10. 18
  11. 51
  12. 90
  13. 97
  14. 45
  15. 46
  16. 49
  17. 56
  18. 46
  19. 17
  20. 24
  21. 30
  22. 56
  23. 62
  24. 70
  25. 69
  26. 20
  27. 21
  28. 56
  29. 33
  30. 14
  31. 91
  32. 94
  33. 67
  34. 89
  35. 51
  36. 14
  37. 21
  38. 62
  39. 27
  40. 95

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