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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 198 · 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: 98, 2, 71, 43? (a) 98 (b) 2 (c) 71 (d) 43
  2. 2.Which number is the odd one out: 41, 62, 13, 29? (a) 41 (b) 62 (c) 13 (d) 29
  3. 3.Which number is the odd one out: 42, 10, 40, 80? (a) 42 (b) 10 (c) 40 (d) 80
  4. 4.Which number is the odd one out: 55, 68, 65, 10? (a) 55 (b) 68 (c) 65 (d) 10
  5. 5.Which number is the odd one out: 49, 63, 9, 27? (a) 49 (b) 63 (c) 9 (d) 27
  6. 6.Which number is the odd one out: 33, 53, 13, 29? (a) 33 (b) 53 (c) 13 (d) 29
  7. 7.Which number is the odd one out: 7, 91, 31, 41? (a) 7 (b) 91 (c) 31 (d) 41
  8. 8.Which number is the odd one out: 48, 83, 89, 71? (a) 48 (b) 83 (c) 89 (d) 71
  9. 9.Which number is the odd one out: 23, 13, 42, 19? (a) 23 (b) 13 (c) 42 (d) 19
  10. 10.Which number is the odd one out: 37, 27, 71, 73? (a) 37 (b) 27 (c) 71 (d) 73
  11. 11.Which number is the odd one out: 41, 6, 79, 73? (a) 41 (b) 6 (c) 79 (d) 73
  12. 12.Which number is the odd one out: 88, 8, 90, 20? (a) 88 (b) 8 (c) 90 (d) 20
  13. 13.Which number is the odd one out: 83, 13, 69, 17? (a) 83 (b) 13 (c) 69 (d) 17
  14. 14.Which number is the odd one out: 67, 6, 29, 89? (a) 67 (b) 6 (c) 29 (d) 89
  15. 15.Which number is the odd one out: 61, 53, 45, 43? (a) 61 (b) 53 (c) 45 (d) 43
  16. 16.Which number is the odd one out: 54, 19, 99, 18? (a) 54 (b) 19 (c) 99 (d) 18
  17. 17.Which number is the odd one out: 13, 71, 31, 18? (a) 13 (b) 71 (c) 31 (d) 18
  18. 18.Which number is the odd one out: 81, 51, 68, 9? (a) 81 (b) 51 (c) 68 (d) 9
  19. 19.Which number is the odd one out: 67, 55, 89, 71? (a) 67 (b) 55 (c) 89 (d) 71
  20. 20.Which number is the odd one out: 16, 64, 9, 99? (a) 16 (b) 64 (c) 9 (d) 99
  21. 21.Which number is the odd one out: 44, 29, 11, 37? (a) 44 (b) 29 (c) 11 (d) 37
  22. 22.Which number is the odd one out: 71, 11, 73, 18? (a) 71 (b) 11 (c) 73 (d) 18
  23. 23.Which number is the odd one out: 25, 81, 72, 24? (a) 25 (b) 81 (c) 72 (d) 24
  24. 24.Which number is the odd one out: 95, 55, 33, 85? (a) 95 (b) 55 (c) 33 (d) 85
  25. 25.Which number is the odd one out: 76, 68, 45, 10? (a) 76 (b) 68 (c) 45 (d) 10
  26. 26.Which number is the odd one out: 2, 90, 47, 73? (a) 2 (b) 90 (c) 47 (d) 73
  27. 27.Which number is the odd one out: 19, 56, 43, 97? (a) 19 (b) 56 (c) 43 (d) 97
  28. 28.Which number is the odd one out: 76, 19, 89, 53? (a) 76 (b) 19 (c) 89 (d) 53
  29. 29.Which number is the odd one out: 23, 29, 27, 90? (a) 23 (b) 29 (c) 27 (d) 90
  30. 30.Which number is the odd one out: 56, 28, 88, 93? (a) 56 (b) 28 (c) 88 (d) 93
  31. 31.Which number is the odd one out: 17, 52, 59, 11? (a) 17 (b) 52 (c) 59 (d) 11
  32. 32.Which number is the odd one out: 30, 84, 35, 12? (a) 30 (b) 84 (c) 35 (d) 12
  33. 33.Which number is the odd one out: 61, 33, 11, 59? (a) 61 (b) 33 (c) 11 (d) 59
  34. 34.Which number is the odd one out: 91, 35, 77, 30? (a) 91 (b) 35 (c) 77 (d) 30
  35. 35.Which number is the odd one out: 83, 18, 72, 24? (a) 83 (b) 18 (c) 72 (d) 24
  36. 36.Which number is the odd one out: 29, 17, 37, 84? (a) 29 (b) 17 (c) 37 (d) 84
  37. 37.Which number is the odd one out: 19, 36, 13, 59? (a) 19 (b) 36 (c) 13 (d) 59
  38. 38.Which number is the odd one out: 69, 18, 53, 23? (a) 69 (b) 18 (c) 53 (d) 23
  39. 39.Which number is the odd one out: 96, 24, 32, 91? (a) 96 (b) 24 (c) 32 (d) 91
  40. 40.Which number is the odd one out: 61, 13, 30, 31? (a) 61 (b) 13 (c) 30 (d) 31

Answer key

  1. 98
  2. 62
  3. 42
  4. 68
  5. 49
  6. 33
  7. 91
  8. 48
  9. 42
  10. 27
  11. 6
  12. 90
  13. 69
  14. 6
  15. 45
  16. 19
  17. 18
  18. 68
  19. 55
  20. 99
  21. 44
  22. 18
  23. 25
  24. 33
  25. 45
  26. 90
  27. 56
  28. 76
  29. 90
  30. 93
  31. 52
  32. 35
  33. 33
  34. 30
  35. 83
  36. 84
  37. 36
  38. 18
  39. 91
  40. 30

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