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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 187 · 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: 53, 90, 30, 45? (a) 53 (b) 90 (c) 30 (d) 45
  2. 2.Which number is the odd one out: 35, 14, 79, 70? (a) 35 (b) 14 (c) 79 (d) 70
  3. 3.Which number is the odd one out: 11, 53, 37, 62? (a) 11 (b) 53 (c) 37 (d) 62
  4. 4.Which number is the odd one out: 21, 17, 59, 7? (a) 21 (b) 17 (c) 59 (d) 7
  5. 5.Which number is the odd one out: 98, 14, 3, 21? (a) 98 (b) 14 (c) 3 (d) 21
  6. 6.Which number is the odd one out: 83, 6, 89, 31? (a) 83 (b) 6 (c) 89 (d) 31
  7. 7.Which number is the odd one out: 6, 67, 19, 89? (a) 6 (b) 67 (c) 19 (d) 89
  8. 8.Which number is the odd one out: 74, 17, 23, 37? (a) 74 (b) 17 (c) 23 (d) 37
  9. 9.Which number is the odd one out: 60, 31, 37, 79? (a) 60 (b) 31 (c) 37 (d) 79
  10. 10.Which number is the odd one out: 67, 75, 13, 5? (a) 67 (b) 75 (c) 13 (d) 5
  11. 11.Which number is the odd one out: 96, 74, 24, 88? (a) 96 (b) 74 (c) 24 (d) 88
  12. 12.Which number is the odd one out: 17, 3, 13, 69? (a) 17 (b) 3 (c) 13 (d) 69
  13. 13.Which number is the odd one out: 50, 99, 75, 27? (a) 50 (b) 99 (c) 75 (d) 27
  14. 14.Which number is the odd one out: 60, 17, 79, 67? (a) 60 (b) 17 (c) 79 (d) 67
  15. 15.Which number is the odd one out: 78, 97, 59, 3? (a) 78 (b) 97 (c) 59 (d) 3
  16. 16.Which number is the odd one out: 89, 17, 45, 11? (a) 89 (b) 17 (c) 45 (d) 11
  17. 17.Which number is the odd one out: 41, 59, 24, 11? (a) 41 (b) 59 (c) 24 (d) 11
  18. 18.Which number is the odd one out: 22, 77, 14, 91? (a) 22 (b) 77 (c) 14 (d) 91
  19. 19.Which number is the odd one out: 73, 80, 23, 17? (a) 73 (b) 80 (c) 23 (d) 17
  20. 20.Which number is the odd one out: 10, 43, 97, 17? (a) 10 (b) 43 (c) 97 (d) 17
  21. 21.Which number is the odd one out: 7, 5, 77, 35? (a) 7 (b) 5 (c) 77 (d) 35
  22. 22.Which number is the odd one out: 55, 5, 44, 71? (a) 55 (b) 5 (c) 44 (d) 71
  23. 23.Which number is the odd one out: 3, 66, 13, 19? (a) 3 (b) 66 (c) 13 (d) 19
  24. 24.Which number is the odd one out: 47, 39, 59, 71? (a) 47 (b) 39 (c) 59 (d) 71
  25. 25.Which number is the odd one out: 14, 70, 35, 29? (a) 14 (b) 70 (c) 35 (d) 29
  26. 26.Which number is the odd one out: 12, 95, 85, 65? (a) 12 (b) 95 (c) 85 (d) 65
  27. 27.Which number is the odd one out: 78, 3, 11, 61? (a) 78 (b) 3 (c) 11 (d) 61
  28. 28.Which number is the odd one out: 8, 52, 32, 75? (a) 8 (b) 52 (c) 32 (d) 75
  29. 29.Which number is the odd one out: 81, 59, 43, 79? (a) 81 (b) 59 (c) 43 (d) 79
  30. 30.Which number is the odd one out: 81, 99, 42, 9? (a) 81 (b) 99 (c) 42 (d) 9
  31. 31.Which number is the odd one out: 89, 67, 97, 52? (a) 89 (b) 67 (c) 97 (d) 52
  32. 32.Which number is the odd one out: 41, 29, 15, 5? (a) 41 (b) 29 (c) 15 (d) 5
  33. 33.Which number is the odd one out: 17, 46, 31, 11? (a) 17 (b) 46 (c) 31 (d) 11
  34. 34.Which number is the odd one out: 68, 75, 34, 20? (a) 68 (b) 75 (c) 34 (d) 20
  35. 35.Which number is the odd one out: 79, 13, 90, 5? (a) 79 (b) 13 (c) 90 (d) 5
  36. 36.Which number is the odd one out: 29, 3, 15, 13? (a) 29 (b) 3 (c) 15 (d) 13
  37. 37.Which number is the odd one out: 3, 20, 33, 43? (a) 3 (b) 20 (c) 33 (d) 43
  38. 38.Which number is the odd one out: 97, 58, 79, 67? (a) 97 (b) 58 (c) 79 (d) 67
  39. 39.Which number is the odd one out: 24, 10, 15, 55? (a) 24 (b) 10 (c) 15 (d) 55
  40. 40.Which number is the odd one out: 41, 61, 65, 29? (a) 41 (b) 61 (c) 65 (d) 29

Answer key

  1. 53
  2. 79
  3. 62
  4. 21
  5. 3
  6. 6
  7. 6
  8. 74
  9. 60
  10. 75
  11. 74
  12. 69
  13. 50
  14. 60
  15. 78
  16. 45
  17. 24
  18. 22
  19. 80
  20. 10
  21. 5
  22. 44
  23. 66
  24. 39
  25. 29
  26. 12
  27. 78
  28. 75
  29. 81
  30. 42
  31. 52
  32. 15
  33. 46
  34. 75
  35. 90
  36. 15
  37. 20
  38. 58
  39. 24
  40. 65

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