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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 613 · 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: 78, 42, 68, 84? (a) 78 (b) 42 (c) 68 (d) 84
  2. 2.Which number is the odd one out: 66, 40, 80, 48? (a) 66 (b) 40 (c) 80 (d) 48
  3. 3.Which number is the odd one out: 19, 13, 37, 51? (a) 19 (b) 13 (c) 37 (d) 51
  4. 4.Which number is the odd one out: 56, 47, 53, 7? (a) 56 (b) 47 (c) 53 (d) 7
  5. 5.Which number is the odd one out: 65, 95, 96, 75? (a) 65 (b) 95 (c) 96 (d) 75
  6. 6.Which number is the odd one out: 2, 6, 37, 71? (a) 2 (b) 6 (c) 37 (d) 71
  7. 7.Which number is the odd one out: 17, 89, 85, 19? (a) 17 (b) 89 (c) 85 (d) 19
  8. 8.Which number is the odd one out: 98, 58, 94, 21? (a) 98 (b) 58 (c) 94 (d) 21
  9. 9.Which number is the odd one out: 79, 2, 20, 17? (a) 79 (b) 2 (c) 20 (d) 17
  10. 10.Which number is the odd one out: 29, 56, 23, 31? (a) 29 (b) 56 (c) 23 (d) 31
  11. 11.Which number is the odd one out: 29, 20, 73, 37? (a) 29 (b) 20 (c) 73 (d) 37
  12. 12.Which number is the odd one out: 17, 60, 23, 47? (a) 17 (b) 60 (c) 23 (d) 47
  13. 13.Which number is the odd one out: 90, 66, 54, 55? (a) 90 (b) 66 (c) 54 (d) 55
  14. 14.Which number is the odd one out: 65, 95, 30, 84? (a) 65 (b) 95 (c) 30 (d) 84
  15. 15.Which number is the odd one out: 17, 47, 95, 50? (a) 17 (b) 47 (c) 95 (d) 50
  16. 16.Which number is the odd one out: 89, 21, 73, 67? (a) 89 (b) 21 (c) 73 (d) 67
  17. 17.Which number is the odd one out: 90, 89, 61, 47? (a) 90 (b) 89 (c) 61 (d) 47
  18. 18.Which number is the odd one out: 13, 59, 26, 73? (a) 13 (b) 59 (c) 26 (d) 73
  19. 19.Which number is the odd one out: 13, 83, 85, 47? (a) 13 (b) 83 (c) 85 (d) 47
  20. 20.Which number is the odd one out: 80, 64, 35, 16? (a) 80 (b) 64 (c) 35 (d) 16
  21. 21.Which number is the odd one out: 78, 53, 17, 11? (a) 78 (b) 53 (c) 17 (d) 11
  22. 22.Which number is the odd one out: 97, 48, 83, 47? (a) 97 (b) 48 (c) 83 (d) 47
  23. 23.Which number is the odd one out: 53, 83, 89, 20? (a) 53 (b) 83 (c) 89 (d) 20
  24. 24.Which number is the odd one out: 65, 95, 35, 21? (a) 65 (b) 95 (c) 35 (d) 21
  25. 25.Which number is the odd one out: 29, 40, 83, 61? (a) 29 (b) 40 (c) 83 (d) 61
  26. 26.Which number is the odd one out: 23, 29, 19, 39? (a) 23 (b) 29 (c) 19 (d) 39
  27. 27.Which number is the odd one out: 4, 16, 82, 8? (a) 4 (b) 16 (c) 82 (d) 8
  28. 28.Which number is the odd one out: 24, 19, 68, 96? (a) 24 (b) 19 (c) 68 (d) 96
  29. 29.Which number is the odd one out: 79, 97, 22, 31? (a) 79 (b) 97 (c) 22 (d) 31
  30. 30.Which number is the odd one out: 17, 74, 11, 31? (a) 17 (b) 74 (c) 11 (d) 31
  31. 31.Which number is the odd one out: 17, 2, 59, 8? (a) 17 (b) 2 (c) 59 (d) 8
  32. 32.Which number is the odd one out: 85, 13, 89, 61? (a) 85 (b) 13 (c) 89 (d) 61
  33. 33.Which number is the odd one out: 83, 39, 19, 67? (a) 83 (b) 39 (c) 19 (d) 67
  34. 34.Which number is the odd one out: 4, 79, 16, 64? (a) 4 (b) 79 (c) 16 (d) 64
  35. 35.Which number is the odd one out: 89, 88, 31, 79? (a) 89 (b) 88 (c) 31 (d) 79
  36. 36.Which number is the odd one out: 89, 58, 41, 83? (a) 89 (b) 58 (c) 41 (d) 83
  37. 37.Which number is the odd one out: 23, 13, 9, 67? (a) 23 (b) 13 (c) 9 (d) 67
  38. 38.Which number is the odd one out: 48, 80, 95, 12? (a) 48 (b) 80 (c) 95 (d) 12
  39. 39.Which number is the odd one out: 59, 31, 98, 13? (a) 59 (b) 31 (c) 98 (d) 13
  40. 40.Which number is the odd one out: 83, 59, 75, 71? (a) 83 (b) 59 (c) 75 (d) 71

Answer key

  1. 68
  2. 66
  3. 51
  4. 56
  5. 96
  6. 6
  7. 85
  8. 21
  9. 20
  10. 56
  11. 20
  12. 60
  13. 55
  14. 84
  15. 50
  16. 21
  17. 90
  18. 26
  19. 85
  20. 35
  21. 78
  22. 48
  23. 20
  24. 21
  25. 40
  26. 39
  27. 82
  28. 19
  29. 22
  30. 74
  31. 8
  32. 85
  33. 39
  34. 79
  35. 88
  36. 58
  37. 9
  38. 95
  39. 98
  40. 75

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