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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 645 · 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: 13, 33, 31, 23? (a) 13 (b) 33 (c) 31 (d) 23
  2. 2.Which number is the odd one out: 17, 3, 90, 53? (a) 17 (b) 3 (c) 90 (d) 53
  3. 3.Which number is the odd one out: 54, 72, 50, 96? (a) 54 (b) 72 (c) 50 (d) 96
  4. 4.Which number is the odd one out: 54, 31, 67, 17? (a) 54 (b) 31 (c) 67 (d) 17
  5. 5.Which number is the odd one out: 19, 11, 81, 61? (a) 19 (b) 11 (c) 81 (d) 61
  6. 6.Which number is the odd one out: 34, 43, 23, 61? (a) 34 (b) 43 (c) 23 (d) 61
  7. 7.Which number is the odd one out: 56, 17, 53, 19? (a) 56 (b) 17 (c) 53 (d) 19
  8. 8.Which number is the odd one out: 79, 23, 62, 67? (a) 79 (b) 23 (c) 62 (d) 67
  9. 9.Which number is the odd one out: 48, 3, 23, 73? (a) 48 (b) 3 (c) 23 (d) 73
  10. 10.Which number is the odd one out: 13, 67, 91, 37? (a) 13 (b) 67 (c) 91 (d) 37
  11. 11.Which number is the odd one out: 35, 29, 98, 70? (a) 35 (b) 29 (c) 98 (d) 70
  12. 12.Which number is the odd one out: 53, 7, 21, 97? (a) 53 (b) 7 (c) 21 (d) 97
  13. 13.Which number is the odd one out: 84, 4, 78, 42? (a) 84 (b) 4 (c) 78 (d) 42
  14. 14.Which number is the odd one out: 42, 85, 50, 95? (a) 42 (b) 85 (c) 50 (d) 95
  15. 15.Which number is the odd one out: 29, 23, 28, 37? (a) 29 (b) 23 (c) 28 (d) 37
  16. 16.Which number is the odd one out: 64, 16, 32, 7? (a) 64 (b) 16 (c) 32 (d) 7
  17. 17.Which number is the odd one out: 65, 97, 13, 83? (a) 65 (b) 97 (c) 13 (d) 83
  18. 18.Which number is the odd one out: 97, 67, 40, 17? (a) 97 (b) 67 (c) 40 (d) 17
  19. 19.Which number is the odd one out: 64, 83, 47, 31? (a) 64 (b) 83 (c) 47 (d) 31
  20. 20.Which number is the odd one out: 48, 96, 12, 74? (a) 48 (b) 96 (c) 12 (d) 74
  21. 21.Which number is the odd one out: 49, 63, 99, 27? (a) 49 (b) 63 (c) 99 (d) 27
  22. 22.Which number is the odd one out: 43, 82, 31, 2? (a) 43 (b) 82 (c) 31 (d) 2
  23. 23.Which number is the odd one out: 67, 31, 44, 79? (a) 67 (b) 31 (c) 44 (d) 79
  24. 24.Which number is the odd one out: 83, 93, 89, 59? (a) 83 (b) 93 (c) 89 (d) 59
  25. 25.Which number is the odd one out: 12, 60, 3, 30? (a) 12 (b) 60 (c) 3 (d) 30
  26. 26.Which number is the odd one out: 11, 29, 86, 61? (a) 11 (b) 29 (c) 86 (d) 61
  27. 27.Which number is the odd one out: 47, 67, 65, 80? (a) 47 (b) 67 (c) 65 (d) 80
  28. 28.Which number is the odd one out: 24, 6, 48, 10? (a) 24 (b) 6 (c) 48 (d) 10
  29. 29.Which number is the odd one out: 17, 79, 37, 16? (a) 17 (b) 79 (c) 37 (d) 16
  30. 30.Which number is the odd one out: 48, 37, 41, 53? (a) 48 (b) 37 (c) 41 (d) 53
  31. 31.Which number is the odd one out: 53, 11, 3, 45? (a) 53 (b) 11 (c) 3 (d) 45
  32. 32.Which number is the odd one out: 66, 3, 6, 78? (a) 66 (b) 3 (c) 6 (d) 78
  33. 33.Which number is the odd one out: 32, 36, 64, 88? (a) 32 (b) 36 (c) 64 (d) 88
  34. 34.Which number is the odd one out: 31, 53, 76, 83? (a) 31 (b) 53 (c) 76 (d) 83
  35. 35.Which number is the odd one out: 96, 24, 94, 68? (a) 96 (b) 24 (c) 94 (d) 68
  36. 36.Which number is the odd one out: 59, 73, 2, 64? (a) 59 (b) 73 (c) 2 (d) 64
  37. 37.Which number is the odd one out: 8, 88, 78, 12? (a) 8 (b) 88 (c) 78 (d) 12
  38. 38.Which number is the odd one out: 22, 73, 59, 23? (a) 22 (b) 73 (c) 59 (d) 23
  39. 39.Which number is the odd one out: 96, 61, 97, 13? (a) 96 (b) 61 (c) 97 (d) 13
  40. 40.Which number is the odd one out: 44, 33, 65, 15? (a) 44 (b) 33 (c) 65 (d) 15

Answer key

  1. 33
  2. 90
  3. 50
  4. 54
  5. 81
  6. 34
  7. 56
  8. 62
  9. 48
  10. 91
  11. 29
  12. 21
  13. 4
  14. 42
  15. 28
  16. 7
  17. 65
  18. 40
  19. 64
  20. 74
  21. 49
  22. 82
  23. 44
  24. 93
  25. 3
  26. 86
  27. 80
  28. 10
  29. 16
  30. 48
  31. 45
  32. 3
  33. 36
  34. 76
  35. 94
  36. 64
  37. 78
  38. 22
  39. 96
  40. 44

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