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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 190 · 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: 8, 80, 38, 15? (a) 8 (b) 80 (c) 38 (d) 15
  2. 2.Which number is the odd one out: 17, 41, 13, 18? (a) 17 (b) 41 (c) 13 (d) 18
  3. 3.Which number is the odd one out: 56, 32, 34, 21? (a) 56 (b) 32 (c) 34 (d) 21
  4. 4.Which number is the odd one out: 79, 71, 77, 13? (a) 79 (b) 71 (c) 77 (d) 13
  5. 5.Which number is the odd one out: 47, 82, 43, 13? (a) 47 (b) 82 (c) 43 (d) 13
  6. 6.Which number is the odd one out: 89, 13, 67, 20? (a) 89 (b) 13 (c) 67 (d) 20
  7. 7.Which number is the odd one out: 3, 15, 50, 37? (a) 3 (b) 15 (c) 50 (d) 37
  8. 8.Which number is the odd one out: 83, 88, 16, 4? (a) 83 (b) 88 (c) 16 (d) 4
  9. 9.Which number is the odd one out: 44, 22, 20, 65? (a) 44 (b) 22 (c) 20 (d) 65
  10. 10.Which number is the odd one out: 35, 40, 77, 14? (a) 35 (b) 40 (c) 77 (d) 14
  11. 11.Which number is the odd one out: 8, 78, 24, 77? (a) 8 (b) 78 (c) 24 (d) 77
  12. 12.Which number is the odd one out: 88, 8, 56, 7? (a) 88 (b) 8 (c) 56 (d) 7
  13. 13.Which number is the odd one out: 89, 17, 66, 23? (a) 89 (b) 17 (c) 66 (d) 23
  14. 14.Which number is the odd one out: 32, 65, 8, 80? (a) 32 (b) 65 (c) 8 (d) 80
  15. 15.Which number is the odd one out: 6, 61, 79, 67? (a) 6 (b) 61 (c) 79 (d) 67
  16. 16.Which number is the odd one out: 26, 96, 48, 24? (a) 26 (b) 96 (c) 48 (d) 24
  17. 17.Which number is the odd one out: 59, 71, 93, 17? (a) 59 (b) 71 (c) 93 (d) 17
  18. 18.Which number is the odd one out: 11, 97, 23, 9? (a) 11 (b) 97 (c) 23 (d) 9
  19. 19.Which number is the odd one out: 5, 80, 61, 17? (a) 5 (b) 80 (c) 61 (d) 17
  20. 20.Which number is the odd one out: 89, 84, 31, 47? (a) 89 (b) 84 (c) 31 (d) 47
  21. 21.Which number is the odd one out: 29, 76, 73, 43? (a) 29 (b) 76 (c) 73 (d) 43
  22. 22.Which number is the odd one out: 37, 29, 6, 11? (a) 37 (b) 29 (c) 6 (d) 11
  23. 23.Which number is the odd one out: 29, 13, 12, 83? (a) 29 (b) 13 (c) 12 (d) 83
  24. 24.Which number is the odd one out: 99, 9, 44, 81? (a) 99 (b) 9 (c) 44 (d) 81
  25. 25.Which number is the odd one out: 56, 70, 32, 88? (a) 56 (b) 70 (c) 32 (d) 88
  26. 26.Which number is the odd one out: 36, 67, 37, 17? (a) 36 (b) 67 (c) 37 (d) 17
  27. 27.Which number is the odd one out: 40, 32, 25, 88? (a) 40 (b) 32 (c) 25 (d) 88
  28. 28.Which number is the odd one out: 2, 17, 59, 6? (a) 2 (b) 17 (c) 59 (d) 6
  29. 29.Which number is the odd one out: 19, 9, 81, 27? (a) 19 (b) 9 (c) 81 (d) 27
  30. 30.Which number is the odd one out: 96, 2, 19, 47? (a) 96 (b) 2 (c) 19 (d) 47
  31. 31.Which number is the odd one out: 74, 31, 89, 97? (a) 74 (b) 31 (c) 89 (d) 97
  32. 32.Which number is the odd one out: 18, 57, 11, 54? (a) 18 (b) 57 (c) 11 (d) 54
  33. 33.Which number is the odd one out: 56, 61, 53, 97? (a) 56 (b) 61 (c) 53 (d) 97
  34. 34.Which number is the odd one out: 2, 97, 42, 11? (a) 2 (b) 97 (c) 42 (d) 11
  35. 35.Which number is the odd one out: 5, 40, 73, 2? (a) 5 (b) 40 (c) 73 (d) 2
  36. 36.Which number is the odd one out: 23, 76, 19, 31? (a) 23 (b) 76 (c) 19 (d) 31
  37. 37.Which number is the odd one out: 8, 64, 4, 61? (a) 8 (b) 64 (c) 4 (d) 61
  38. 38.Which number is the odd one out: 96, 43, 17, 13? (a) 96 (b) 43 (c) 17 (d) 13
  39. 39.Which number is the odd one out: 47, 57, 31, 71? (a) 47 (b) 57 (c) 31 (d) 71
  40. 40.Which number is the odd one out: 2, 78, 13, 17? (a) 2 (b) 78 (c) 13 (d) 17

Answer key

  1. 15
  2. 18
  3. 21
  4. 77
  5. 82
  6. 20
  7. 50
  8. 83
  9. 65
  10. 40
  11. 77
  12. 7
  13. 66
  14. 65
  15. 6
  16. 26
  17. 93
  18. 9
  19. 80
  20. 84
  21. 76
  22. 6
  23. 12
  24. 44
  25. 70
  26. 36
  27. 25
  28. 6
  29. 19
  30. 96
  31. 74
  32. 11
  33. 56
  34. 42
  35. 40
  36. 76
  37. 61
  38. 96
  39. 57
  40. 78

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