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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 215 · 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: 50, 17, 40, 80? (a) 50 (b) 17 (c) 40 (d) 80
  2. 2.Which number is the odd one out: 54, 91, 18, 27? (a) 54 (b) 91 (c) 18 (d) 27
  3. 3.Which number is the odd one out: 16, 44, 64, 73? (a) 16 (b) 44 (c) 64 (d) 73
  4. 4.Which number is the odd one out: 47, 19, 31, 15? (a) 47 (b) 19 (c) 31 (d) 15
  5. 5.Which number is the odd one out: 24, 19, 11, 79? (a) 24 (b) 19 (c) 11 (d) 79
  6. 6.Which number is the odd one out: 37, 4, 41, 97? (a) 37 (b) 4 (c) 41 (d) 97
  7. 7.Which number is the odd one out: 98, 43, 47, 19? (a) 98 (b) 43 (c) 47 (d) 19
  8. 8.Which number is the odd one out: 37, 79, 17, 69? (a) 37 (b) 79 (c) 17 (d) 69
  9. 9.Which number is the odd one out: 32, 8, 80, 35? (a) 32 (b) 8 (c) 80 (d) 35
  10. 10.Which number is the odd one out: 19, 65, 83, 89? (a) 19 (b) 65 (c) 83 (d) 89
  11. 11.Which number is the odd one out: 94, 89, 97, 83? (a) 94 (b) 89 (c) 97 (d) 83
  12. 12.Which number is the odd one out: 41, 29, 34, 11? (a) 41 (b) 29 (c) 34 (d) 11
  13. 13.Which number is the odd one out: 9, 59, 97, 31? (a) 9 (b) 59 (c) 97 (d) 31
  14. 14.Which number is the odd one out: 51, 5, 87, 57? (a) 51 (b) 5 (c) 87 (d) 57
  15. 15.Which number is the odd one out: 5, 17, 83, 25? (a) 5 (b) 17 (c) 83 (d) 25
  16. 16.Which number is the odd one out: 2, 19, 73, 42? (a) 2 (b) 19 (c) 73 (d) 42
  17. 17.Which number is the odd one out: 48, 96, 16, 25? (a) 48 (b) 96 (c) 16 (d) 25
  18. 18.Which number is the odd one out: 84, 99, 81, 9? (a) 84 (b) 99 (c) 81 (d) 9
  19. 19.Which number is the odd one out: 66, 17, 37, 61? (a) 66 (b) 17 (c) 37 (d) 61
  20. 20.Which number is the odd one out: 53, 11, 71, 94? (a) 53 (b) 11 (c) 71 (d) 94
  21. 21.Which number is the odd one out: 65, 75, 15, 29? (a) 65 (b) 75 (c) 15 (d) 29
  22. 22.Which number is the odd one out: 11, 85, 43, 5? (a) 11 (b) 85 (c) 43 (d) 5
  23. 23.Which number is the odd one out: 23, 47, 25, 67? (a) 23 (b) 47 (c) 25 (d) 67
  24. 24.Which number is the odd one out: 25, 72, 18, 24? (a) 25 (b) 72 (c) 18 (d) 24
  25. 25.Which number is the odd one out: 37, 7, 97, 35? (a) 37 (b) 7 (c) 97 (d) 35
  26. 26.Which number is the odd one out: 85, 97, 23, 31? (a) 85 (b) 97 (c) 23 (d) 31
  27. 27.Which number is the odd one out: 61, 18, 89, 31? (a) 61 (b) 18 (c) 89 (d) 31
  28. 28.Which number is the odd one out: 97, 52, 23, 41? (a) 97 (b) 52 (c) 23 (d) 41
  29. 29.Which number is the odd one out: 41, 5, 83, 70? (a) 41 (b) 5 (c) 83 (d) 70
  30. 30.Which number is the odd one out: 4, 16, 98, 64? (a) 4 (b) 16 (c) 98 (d) 64
  31. 31.Which number is the odd one out: 2, 19, 73, 11? (a) 2 (b) 19 (c) 73 (d) 11
  32. 32.Which number is the odd one out: 88, 48, 32, 78? (a) 88 (b) 48 (c) 32 (d) 78
  33. 33.Which number is the odd one out: 17, 89, 16, 11? (a) 17 (b) 89 (c) 16 (d) 11
  34. 34.Which number is the odd one out: 16, 12, 6, 78? (a) 16 (b) 12 (c) 6 (d) 78
  35. 35.Which number is the odd one out: 80, 18, 20, 72? (a) 80 (b) 18 (c) 20 (d) 72
  36. 36.Which number is the odd one out: 68, 44, 82, 9? (a) 68 (b) 44 (c) 82 (d) 9
  37. 37.Which number is the odd one out: 79, 66, 23, 61? (a) 79 (b) 66 (c) 23 (d) 61
  38. 38.Which number is the odd one out: 97, 55, 83, 37? (a) 97 (b) 55 (c) 83 (d) 37
  39. 39.Which number is the odd one out: 7, 9, 27, 81? (a) 7 (b) 9 (c) 27 (d) 81
  40. 40.Which number is the odd one out: 73, 43, 61, 30? (a) 73 (b) 43 (c) 61 (d) 30

Answer key

  1. 17
  2. 91
  3. 73
  4. 15
  5. 24
  6. 4
  7. 98
  8. 69
  9. 35
  10. 65
  11. 94
  12. 34
  13. 9
  14. 5
  15. 25
  16. 42
  17. 25
  18. 84
  19. 66
  20. 94
  21. 29
  22. 85
  23. 25
  24. 25
  25. 35
  26. 85
  27. 18
  28. 52
  29. 70
  30. 98
  31. 2
  32. 78
  33. 16
  34. 16
  35. 18
  36. 9
  37. 66
  38. 55
  39. 7
  40. 30

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