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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 904 · 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: 45, 23, 27, 15? (a) 45 (b) 23 (c) 27 (d) 15
  2. 2.Which number is the odd one out: 47, 25, 43, 97? (a) 47 (b) 25 (c) 43 (d) 97
  3. 3.Which number is the odd one out: 48, 68, 55, 24? (a) 48 (b) 68 (c) 55 (d) 24
  4. 4.Which number is the odd one out: 41, 29, 57, 53? (a) 41 (b) 29 (c) 57 (d) 53
  5. 5.Which number is the odd one out: 28, 9, 49, 81? (a) 28 (b) 9 (c) 49 (d) 81
  6. 6.Which number is the odd one out: 73, 46, 53, 71? (a) 73 (b) 46 (c) 53 (d) 71
  7. 7.Which number is the odd one out: 65, 54, 99, 90? (a) 65 (b) 54 (c) 99 (d) 90
  8. 8.Which number is the odd one out: 96, 66, 48, 2? (a) 96 (b) 66 (c) 48 (d) 2
  9. 9.Which number is the odd one out: 75, 10, 66, 85? (a) 75 (b) 10 (c) 66 (d) 85
  10. 10.Which number is the odd one out: 31, 17, 43, 99? (a) 31 (b) 17 (c) 43 (d) 99
  11. 11.Which number is the odd one out: 43, 83, 98, 89? (a) 43 (b) 83 (c) 98 (d) 89
  12. 12.Which number is the odd one out: 42, 8, 48, 88? (a) 42 (b) 8 (c) 48 (d) 88
  13. 13.Which number is the odd one out: 95, 26, 33, 15? (a) 95 (b) 26 (c) 33 (d) 15
  14. 14.Which number is the odd one out: 62, 31, 34, 38? (a) 62 (b) 31 (c) 34 (d) 38
  15. 15.Which number is the odd one out: 17, 13, 88, 67? (a) 17 (b) 13 (c) 88 (d) 67
  16. 16.Which number is the odd one out: 53, 13, 97, 51? (a) 53 (b) 13 (c) 97 (d) 51
  17. 17.Which number is the odd one out: 71, 43, 22, 31? (a) 71 (b) 43 (c) 22 (d) 31
  18. 18.Which number is the odd one out: 99, 79, 71, 53? (a) 99 (b) 79 (c) 71 (d) 53
  19. 19.Which number is the odd one out: 27, 67, 81, 9? (a) 27 (b) 67 (c) 81 (d) 9
  20. 20.Which number is the odd one out: 18, 78, 54, 64? (a) 18 (b) 78 (c) 54 (d) 64
  21. 21.Which number is the odd one out: 15, 75, 83, 95? (a) 15 (b) 75 (c) 83 (d) 95
  22. 22.Which number is the odd one out: 80, 83, 41, 53? (a) 80 (b) 83 (c) 41 (d) 53
  23. 23.Which number is the odd one out: 78, 45, 18, 66? (a) 78 (b) 45 (c) 18 (d) 66
  24. 24.Which number is the odd one out: 10, 32, 24, 96? (a) 10 (b) 32 (c) 24 (d) 96
  25. 25.Which number is the odd one out: 73, 74, 89, 83? (a) 73 (b) 74 (c) 89 (d) 83
  26. 26.Which number is the odd one out: 86, 22, 99, 26? (a) 86 (b) 22 (c) 99 (d) 26
  27. 27.Which number is the odd one out: 19, 28, 59, 41? (a) 19 (b) 28 (c) 59 (d) 41
  28. 28.Which number is the odd one out: 29, 43, 23, 46? (a) 29 (b) 43 (c) 23 (d) 46
  29. 29.Which number is the odd one out: 40, 79, 80, 8? (a) 40 (b) 79 (c) 80 (d) 8
  30. 30.Which number is the odd one out: 13, 11, 26, 29? (a) 13 (b) 11 (c) 26 (d) 29
  31. 31.Which number is the odd one out: 74, 55, 13, 5? (a) 74 (b) 55 (c) 13 (d) 5
  32. 32.Which number is the odd one out: 17, 59, 12, 29? (a) 17 (b) 59 (c) 12 (d) 29
  33. 33.Which number is the odd one out: 79, 89, 71, 95? (a) 79 (b) 89 (c) 71 (d) 95
  34. 34.Which number is the odd one out: 31, 53, 23, 74? (a) 31 (b) 53 (c) 23 (d) 74
  35. 35.Which number is the odd one out: 13, 86, 29, 41? (a) 13 (b) 86 (c) 29 (d) 41
  36. 36.Which number is the odd one out: 17, 59, 53, 75? (a) 17 (b) 59 (c) 53 (d) 75
  37. 37.Which number is the odd one out: 90, 71, 83, 79? (a) 90 (b) 71 (c) 83 (d) 79
  38. 38.Which number is the odd one out: 67, 64, 13, 61? (a) 67 (b) 64 (c) 13 (d) 61
  39. 39.Which number is the odd one out: 13, 59, 17, 57? (a) 13 (b) 59 (c) 17 (d) 57
  40. 40.Which number is the odd one out: 27, 18, 55, 90? (a) 27 (b) 18 (c) 55 (d) 90

Answer key

  1. 23
  2. 25
  3. 55
  4. 57
  5. 28
  6. 46
  7. 65
  8. 2
  9. 66
  10. 99
  11. 98
  12. 42
  13. 26
  14. 31
  15. 88
  16. 51
  17. 22
  18. 99
  19. 67
  20. 64
  21. 83
  22. 80
  23. 45
  24. 10
  25. 74
  26. 99
  27. 28
  28. 46
  29. 79
  30. 26
  31. 74
  32. 12
  33. 95
  34. 74
  35. 86
  36. 75
  37. 90
  38. 64
  39. 57
  40. 55

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