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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 38 · 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: 50, 67, 11, 97? (a) 50 (b) 67 (c) 11 (d) 97
  2. 2.Which number is the odd one out: 27, 54, 18, 5? (a) 27 (b) 54 (c) 18 (d) 5
  3. 3.Which number is the odd one out: 16, 72, 91, 36? (a) 16 (b) 72 (c) 91 (d) 36
  4. 4.Which number is the odd one out: 88, 89, 17, 59? (a) 88 (b) 89 (c) 17 (d) 59
  5. 5.Which number is the odd one out: 96, 24, 47, 6? (a) 96 (b) 24 (c) 47 (d) 6
  6. 6.Which number is the odd one out: 27, 54, 18, 61? (a) 27 (b) 54 (c) 18 (d) 61
  7. 7.Which number is the odd one out: 73, 39, 86, 3? (a) 73 (b) 39 (c) 86 (d) 3
  8. 8.Which number is the odd one out: 6, 85, 5, 29? (a) 6 (b) 85 (c) 5 (d) 29
  9. 9.Which number is the odd one out: 97, 79, 81, 53? (a) 97 (b) 79 (c) 81 (d) 53
  10. 10.Which number is the odd one out: 24, 32, 48, 58? (a) 24 (b) 32 (c) 48 (d) 58
  11. 11.Which number is the odd one out: 7, 57, 48, 96? (a) 7 (b) 57 (c) 48 (d) 96
  12. 12.Which number is the odd one out: 79, 13, 46, 59? (a) 79 (b) 13 (c) 46 (d) 59
  13. 13.Which number is the odd one out: 67, 2, 32, 59? (a) 67 (b) 2 (c) 32 (d) 59
  14. 14.Which number is the odd one out: 71, 24, 89, 41? (a) 71 (b) 24 (c) 89 (d) 41
  15. 15.Which number is the odd one out: 67, 37, 66, 13? (a) 67 (b) 37 (c) 66 (d) 13
  16. 16.Which number is the odd one out: 13, 29, 42, 73? (a) 13 (b) 29 (c) 42 (d) 73
  17. 17.Which number is the odd one out: 13, 79, 99, 29? (a) 13 (b) 79 (c) 99 (d) 29
  18. 18.Which number is the odd one out: 8, 73, 53, 47? (a) 8 (b) 73 (c) 53 (d) 47
  19. 19.Which number is the odd one out: 19, 3, 15, 59? (a) 19 (b) 3 (c) 15 (d) 59
  20. 20.Which number is the odd one out: 50, 43, 97, 2? (a) 50 (b) 43 (c) 97 (d) 2
  21. 21.Which number is the odd one out: 73, 95, 31, 43? (a) 73 (b) 95 (c) 31 (d) 43
  22. 22.Which number is the odd one out: 95, 83, 43, 61? (a) 95 (b) 83 (c) 43 (d) 61
  23. 23.Which number is the odd one out: 96, 95, 20, 48? (a) 96 (b) 95 (c) 20 (d) 48
  24. 24.Which number is the odd one out: 67, 17, 57, 73? (a) 67 (b) 17 (c) 57 (d) 73
  25. 25.Which number is the odd one out: 50, 80, 11, 40? (a) 50 (b) 80 (c) 11 (d) 40
  26. 26.Which number is the odd one out: 56, 32, 77, 8? (a) 56 (b) 32 (c) 77 (d) 8
  27. 27.Which number is the odd one out: 88, 97, 32, 8? (a) 88 (b) 97 (c) 32 (d) 8
  28. 28.Which number is the odd one out: 18, 99, 27, 78? (a) 18 (b) 99 (c) 27 (d) 78
  29. 29.Which number is the odd one out: 42, 40, 14, 84? (a) 42 (b) 40 (c) 14 (d) 84
  30. 30.Which number is the odd one out: 54, 43, 73, 2? (a) 54 (b) 43 (c) 73 (d) 2
  31. 31.Which number is the odd one out: 32, 23, 37, 73? (a) 32 (b) 23 (c) 37 (d) 73
  32. 32.Which number is the odd one out: 55, 86, 65, 95? (a) 55 (b) 86 (c) 65 (d) 95
  33. 33.Which number is the odd one out: 78, 30, 96, 80? (a) 78 (b) 30 (c) 96 (d) 80
  34. 34.Which number is the odd one out: 72, 20, 50, 30? (a) 72 (b) 20 (c) 50 (d) 30
  35. 35.Which number is the odd one out: 83, 5, 40, 80? (a) 83 (b) 5 (c) 40 (d) 80
  36. 36.Which number is the odd one out: 73, 89, 47, 40? (a) 73 (b) 89 (c) 47 (d) 40
  37. 37.Which number is the odd one out: 75, 12, 60, 78? (a) 75 (b) 12 (c) 60 (d) 78
  38. 38.Which number is the odd one out: 89, 18, 93, 17? (a) 89 (b) 18 (c) 93 (d) 17
  39. 39.Which number is the odd one out: 37, 61, 40, 83? (a) 37 (b) 61 (c) 40 (d) 83
  40. 40.Which number is the odd one out: 73, 59, 38, 97? (a) 73 (b) 59 (c) 38 (d) 97

Answer key

  1. 50
  2. 5
  3. 91
  4. 88
  5. 47
  6. 61
  7. 86
  8. 6
  9. 81
  10. 58
  11. 7
  12. 46
  13. 32
  14. 24
  15. 66
  16. 42
  17. 99
  18. 8
  19. 15
  20. 50
  21. 95
  22. 95
  23. 95
  24. 57
  25. 11
  26. 77
  27. 97
  28. 78
  29. 40
  30. 54
  31. 32
  32. 86
  33. 80
  34. 72
  35. 83
  36. 40
  37. 75
  38. 18
  39. 40
  40. 38

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