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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 640 · 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, 83, 9, 81? (a) 27 (b) 83 (c) 9 (d) 81
  2. 2.Which number is the odd one out: 9, 25, 81, 50? (a) 9 (b) 25 (c) 81 (d) 50
  3. 3.Which number is the odd one out: 54, 99, 11, 18? (a) 54 (b) 99 (c) 11 (d) 18
  4. 4.Which number is the odd one out: 37, 2, 83, 36? (a) 37 (b) 2 (c) 83 (d) 36
  5. 5.Which number is the odd one out: 42, 18, 56, 54? (a) 42 (b) 18 (c) 56 (d) 54
  6. 6.Which number is the odd one out: 3, 18, 79, 11? (a) 3 (b) 18 (c) 79 (d) 11
  7. 7.Which number is the odd one out: 92, 11, 59, 83? (a) 92 (b) 11 (c) 59 (d) 83
  8. 8.Which number is the odd one out: 64, 32, 66, 16? (a) 64 (b) 32 (c) 66 (d) 16
  9. 9.Which number is the odd one out: 18, 29, 13, 37? (a) 18 (b) 29 (c) 13 (d) 37
  10. 10.Which number is the odd one out: 94, 43, 83, 23? (a) 94 (b) 43 (c) 83 (d) 23
  11. 11.Which number is the odd one out: 92, 24, 58, 96? (a) 92 (b) 24 (c) 58 (d) 96
  12. 12.Which number is the odd one out: 98, 2, 59, 83? (a) 98 (b) 2 (c) 59 (d) 83
  13. 13.Which number is the odd one out: 29, 19, 9, 59? (a) 29 (b) 19 (c) 9 (d) 59
  14. 14.Which number is the odd one out: 88, 5, 48, 24? (a) 88 (b) 5 (c) 48 (d) 24
  15. 15.Which number is the odd one out: 47, 19, 83, 22? (a) 47 (b) 19 (c) 83 (d) 22
  16. 16.Which number is the odd one out: 9, 18, 81, 60? (a) 9 (b) 18 (c) 81 (d) 60
  17. 17.Which number is the odd one out: 65, 85, 61, 5? (a) 65 (b) 85 (c) 61 (d) 5
  18. 18.Which number is the odd one out: 57, 81, 10, 9? (a) 57 (b) 81 (c) 10 (d) 9
  19. 19.Which number is the odd one out: 16, 92, 8, 9? (a) 16 (b) 92 (c) 8 (d) 9
  20. 20.Which number is the odd one out: 93, 43, 97, 11? (a) 93 (b) 43 (c) 97 (d) 11
  21. 21.Which number is the odd one out: 8, 24, 52, 96? (a) 8 (b) 24 (c) 52 (d) 96
  22. 22.Which number is the odd one out: 17, 63, 47, 59? (a) 17 (b) 63 (c) 47 (d) 59
  23. 23.Which number is the odd one out: 15, 85, 72, 55? (a) 15 (b) 85 (c) 72 (d) 55
  24. 24.Which number is the odd one out: 13, 81, 23, 89? (a) 13 (b) 81 (c) 23 (d) 89
  25. 25.Which number is the odd one out: 53, 3, 97, 66? (a) 53 (b) 3 (c) 97 (d) 66
  26. 26.Which number is the odd one out: 90, 11, 18, 30? (a) 90 (b) 11 (c) 18 (d) 30
  27. 27.Which number is the odd one out: 32, 41, 43, 2? (a) 32 (b) 41 (c) 43 (d) 2
  28. 28.Which number is the odd one out: 11, 23, 89, 44? (a) 11 (b) 23 (c) 89 (d) 44
  29. 29.Which number is the odd one out: 10, 11, 43, 29? (a) 10 (b) 11 (c) 43 (d) 29
  30. 30.Which number is the odd one out: 26, 55, 85, 50? (a) 26 (b) 55 (c) 85 (d) 50
  31. 31.Which number is the odd one out: 48, 96, 84, 14? (a) 48 (b) 96 (c) 84 (d) 14
  32. 32.Which number is the odd one out: 2, 19, 73, 31? (a) 2 (b) 19 (c) 73 (d) 31
  33. 33.Which number is the odd one out: 68, 44, 28, 7? (a) 68 (b) 44 (c) 28 (d) 7
  34. 34.Which number is the odd one out: 89, 17, 69, 90? (a) 89 (b) 17 (c) 69 (d) 90
  35. 35.Which number is the odd one out: 85, 71, 29, 59? (a) 85 (b) 71 (c) 29 (d) 59
  36. 36.Which number is the odd one out: 88, 8, 66, 12? (a) 88 (b) 8 (c) 66 (d) 12
  37. 37.Which number is the odd one out: 17, 31, 19, 8? (a) 17 (b) 31 (c) 19 (d) 8
  38. 38.Which number is the odd one out: 48, 15, 30, 96? (a) 48 (b) 15 (c) 30 (d) 96
  39. 39.Which number is the odd one out: 73, 11, 26, 43? (a) 73 (b) 11 (c) 26 (d) 43
  40. 40.Which number is the odd one out: 48, 11, 88, 24? (a) 48 (b) 11 (c) 88 (d) 24

Answer key

  1. 83
  2. 50
  3. 11
  4. 36
  5. 56
  6. 18
  7. 92
  8. 66
  9. 18
  10. 94
  11. 58
  12. 98
  13. 9
  14. 5
  15. 22
  16. 60
  17. 61
  18. 10
  19. 9
  20. 93
  21. 52
  22. 63
  23. 72
  24. 81
  25. 66
  26. 11
  27. 32
  28. 44
  29. 10
  30. 26
  31. 14
  32. 2
  33. 7
  34. 90
  35. 85
  36. 66
  37. 8
  38. 15
  39. 26
  40. 11

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