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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 917 · 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: 37, 5, 88, 85? (a) 37 (b) 5 (c) 88 (d) 85
  2. 2.Which number is the odd one out: 52, 16, 32, 64? (a) 52 (b) 16 (c) 32 (d) 64
  3. 3.Which number is the odd one out: 76, 71, 89, 53? (a) 76 (b) 71 (c) 89 (d) 53
  4. 4.Which number is the odd one out: 71, 53, 50, 97? (a) 71 (b) 53 (c) 50 (d) 97
  5. 5.Which number is the odd one out: 38, 97, 71, 19? (a) 38 (b) 97 (c) 71 (d) 19
  6. 6.Which number is the odd one out: 37, 73, 15, 60? (a) 37 (b) 73 (c) 15 (d) 60
  7. 7.Which number is the odd one out: 31, 83, 40, 29? (a) 31 (b) 83 (c) 40 (d) 29
  8. 8.Which number is the odd one out: 27, 60, 9, 36? (a) 27 (b) 60 (c) 9 (d) 36
  9. 9.Which number is the odd one out: 4, 16, 15, 64? (a) 4 (b) 16 (c) 15 (d) 64
  10. 10.Which number is the odd one out: 10, 8, 68, 80? (a) 10 (b) 8 (c) 68 (d) 80
  11. 11.Which number is the odd one out: 16, 12, 66, 6? (a) 16 (b) 12 (c) 66 (d) 6
  12. 12.Which number is the odd one out: 78, 80, 6, 48? (a) 78 (b) 80 (c) 6 (d) 48
  13. 13.Which number is the odd one out: 83, 73, 89, 68? (a) 83 (b) 73 (c) 89 (d) 68
  14. 14.Which number is the odd one out: 4, 11, 67, 17? (a) 4 (b) 11 (c) 67 (d) 17
  15. 15.Which number is the odd one out: 77, 98, 11, 71? (a) 77 (b) 98 (c) 11 (d) 71
  16. 16.Which number is the odd one out: 20, 31, 61, 11? (a) 20 (b) 31 (c) 61 (d) 11
  17. 17.Which number is the odd one out: 59, 56, 71, 29? (a) 59 (b) 56 (c) 71 (d) 29
  18. 18.Which number is the odd one out: 23, 10, 13, 5? (a) 23 (b) 10 (c) 13 (d) 5
  19. 19.Which number is the odd one out: 59, 30, 73, 13? (a) 59 (b) 30 (c) 73 (d) 13
  20. 20.Which number is the odd one out: 49, 20, 40, 8? (a) 49 (b) 20 (c) 40 (d) 8
  21. 21.Which number is the odd one out: 39, 69, 85, 57? (a) 39 (b) 69 (c) 85 (d) 57
  22. 22.Which number is the odd one out: 53, 18, 19, 17? (a) 53 (b) 18 (c) 19 (d) 17
  23. 23.Which number is the odd one out: 56, 47, 61, 2? (a) 56 (b) 47 (c) 61 (d) 2
  24. 24.Which number is the odd one out: 43, 96, 53, 3? (a) 43 (b) 96 (c) 53 (d) 3
  25. 25.Which number is the odd one out: 5, 30, 29, 67? (a) 5 (b) 30 (c) 29 (d) 67
  26. 26.Which number is the odd one out: 14, 37, 67, 17? (a) 14 (b) 37 (c) 67 (d) 17
  27. 27.Which number is the odd one out: 17, 7, 70, 47? (a) 17 (b) 7 (c) 70 (d) 47
  28. 28.Which number is the odd one out: 2, 50, 31, 37? (a) 2 (b) 50 (c) 31 (d) 37
  29. 29.Which number is the odd one out: 89, 50, 67, 11? (a) 89 (b) 50 (c) 67 (d) 11
  30. 30.Which number is the odd one out: 40, 48, 96, 85? (a) 40 (b) 48 (c) 96 (d) 85
  31. 31.Which number is the odd one out: 61, 5, 15, 89? (a) 61 (b) 5 (c) 15 (d) 89
  32. 32.Which number is the odd one out: 70, 98, 28, 60? (a) 70 (b) 98 (c) 28 (d) 60
  33. 33.Which number is the odd one out: 43, 89, 36, 71? (a) 43 (b) 89 (c) 36 (d) 71
  34. 34.Which number is the odd one out: 33, 54, 18, 27? (a) 33 (b) 54 (c) 18 (d) 27
  35. 35.Which number is the odd one out: 17, 26, 61, 23? (a) 17 (b) 26 (c) 61 (d) 23
  36. 36.Which number is the odd one out: 55, 10, 70, 7? (a) 55 (b) 10 (c) 70 (d) 7
  37. 37.Which number is the odd one out: 4, 64, 16, 21? (a) 4 (b) 64 (c) 16 (d) 21
  38. 38.Which number is the odd one out: 28, 53, 31, 7? (a) 28 (b) 53 (c) 31 (d) 7
  39. 39.Which number is the odd one out: 12, 96, 40, 60? (a) 12 (b) 96 (c) 40 (d) 60
  40. 40.Which number is the odd one out: 37, 10, 5, 79? (a) 37 (b) 10 (c) 5 (d) 79

Answer key

  1. 88
  2. 52
  3. 76
  4. 50
  5. 38
  6. 60
  7. 40
  8. 60
  9. 15
  10. 10
  11. 16
  12. 80
  13. 68
  14. 4
  15. 98
  16. 20
  17. 56
  18. 10
  19. 30
  20. 49
  21. 85
  22. 18
  23. 56
  24. 96
  25. 30
  26. 14
  27. 70
  28. 50
  29. 50
  30. 85
  31. 15
  32. 60
  33. 36
  34. 33
  35. 26
  36. 7
  37. 21
  38. 28
  39. 40
  40. 10

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