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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 24 · 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: 20, 53, 13, 59? (a) 20 (b) 53 (c) 13 (d) 59
  2. 2.Which number is the odd one out: 48, 96, 5, 8? (a) 48 (b) 96 (c) 5 (d) 8
  3. 3.Which number is the odd one out: 32, 88, 40, 50? (a) 32 (b) 88 (c) 40 (d) 50
  4. 4.Which number is the odd one out: 31, 12, 41, 67? (a) 31 (b) 12 (c) 41 (d) 67
  5. 5.Which number is the odd one out: 16, 17, 11, 43? (a) 16 (b) 17 (c) 11 (d) 43
  6. 6.Which number is the odd one out: 67, 41, 8, 11? (a) 67 (b) 41 (c) 8 (d) 11
  7. 7.Which number is the odd one out: 79, 43, 37, 69? (a) 79 (b) 43 (c) 37 (d) 69
  8. 8.Which number is the odd one out: 54, 50, 55, 75? (a) 54 (b) 50 (c) 55 (d) 75
  9. 9.Which number is the odd one out: 11, 66, 73, 37? (a) 11 (b) 66 (c) 73 (d) 37
  10. 10.Which number is the odd one out: 55, 24, 48, 8? (a) 55 (b) 24 (c) 48 (d) 8
  11. 11.Which number is the odd one out: 17, 64, 41, 59? (a) 17 (b) 64 (c) 41 (d) 59
  12. 12.Which number is the odd one out: 90, 88, 24, 40? (a) 90 (b) 88 (c) 24 (d) 40
  13. 13.Which number is the odd one out: 47, 53, 59, 20? (a) 47 (b) 53 (c) 59 (d) 20
  14. 14.Which number is the odd one out: 23, 79, 74, 73? (a) 23 (b) 79 (c) 74 (d) 73
  15. 15.Which number is the odd one out: 47, 85, 89, 37? (a) 47 (b) 85 (c) 89 (d) 37
  16. 16.Which number is the odd one out: 73, 67, 35, 7? (a) 73 (b) 67 (c) 35 (d) 7
  17. 17.Which number is the odd one out: 13, 48, 79, 17? (a) 13 (b) 48 (c) 79 (d) 17
  18. 18.Which number is the odd one out: 89, 5, 70, 13? (a) 89 (b) 5 (c) 70 (d) 13
  19. 19.Which number is the odd one out: 11, 13, 77, 19? (a) 11 (b) 13 (c) 77 (d) 19
  20. 20.Which number is the odd one out: 32, 20, 86, 80? (a) 32 (b) 20 (c) 86 (d) 80
  21. 21.Which number is the odd one out: 3, 53, 6, 43? (a) 3 (b) 53 (c) 6 (d) 43
  22. 22.Which number is the odd one out: 83, 67, 13, 57? (a) 83 (b) 67 (c) 13 (d) 57
  23. 23.Which number is the odd one out: 56, 53, 19, 31? (a) 56 (b) 53 (c) 19 (d) 31
  24. 24.Which number is the odd one out: 31, 53, 77, 79? (a) 31 (b) 53 (c) 77 (d) 79
  25. 25.Which number is the odd one out: 81, 97, 99, 9? (a) 81 (b) 97 (c) 99 (d) 9
  26. 26.Which number is the odd one out: 61, 83, 20, 37? (a) 61 (b) 83 (c) 20 (d) 37
  27. 27.Which number is the odd one out: 17, 29, 41, 33? (a) 17 (b) 29 (c) 41 (d) 33
  28. 28.Which number is the odd one out: 47, 11, 90, 53? (a) 47 (b) 11 (c) 90 (d) 53
  29. 29.Which number is the odd one out: 43, 72, 31, 2? (a) 43 (b) 72 (c) 31 (d) 2
  30. 30.Which number is the odd one out: 60, 43, 3, 55? (a) 60 (b) 43 (c) 3 (d) 55
  31. 31.Which number is the odd one out: 89, 23, 53, 8? (a) 89 (b) 23 (c) 53 (d) 8
  32. 32.Which number is the odd one out: 27, 13, 81, 9? (a) 27 (b) 13 (c) 81 (d) 9
  33. 33.Which number is the odd one out: 27, 59, 37, 47? (a) 27 (b) 59 (c) 37 (d) 47
  34. 34.Which number is the odd one out: 50, 89, 23, 53? (a) 50 (b) 89 (c) 23 (d) 53
  35. 35.Which number is the odd one out: 73, 55, 31, 89? (a) 73 (b) 55 (c) 31 (d) 89
  36. 36.Which number is the odd one out: 47, 31, 66, 37? (a) 47 (b) 31 (c) 66 (d) 37
  37. 37.Which number is the odd one out: 21, 17, 71, 79? (a) 21 (b) 17 (c) 71 (d) 79
  38. 38.Which number is the odd one out: 13, 34, 79, 37? (a) 13 (b) 34 (c) 79 (d) 37
  39. 39.Which number is the odd one out: 35, 92, 56, 32? (a) 35 (b) 92 (c) 56 (d) 32
  40. 40.Which number is the odd one out: 28, 56, 80, 10? (a) 28 (b) 56 (c) 80 (d) 10

Answer key

  1. 20
  2. 5
  3. 50
  4. 12
  5. 16
  6. 8
  7. 69
  8. 54
  9. 66
  10. 55
  11. 64
  12. 90
  13. 20
  14. 74
  15. 85
  16. 35
  17. 48
  18. 70
  19. 77
  20. 86
  21. 6
  22. 57
  23. 56
  24. 77
  25. 97
  26. 20
  27. 33
  28. 90
  29. 72
  30. 60
  31. 8
  32. 13
  33. 27
  34. 50
  35. 55
  36. 66
  37. 21
  38. 34
  39. 35
  40. 10

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