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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 127 · 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: 11, 85, 53, 23? (a) 11 (b) 85 (c) 53 (d) 23
  2. 2.Which number is the odd one out: 81, 72, 24, 96? (a) 81 (b) 72 (c) 24 (d) 96
  3. 3.Which number is the odd one out: 46, 74, 34, 51? (a) 46 (b) 74 (c) 34 (d) 51
  4. 4.Which number is the odd one out: 41, 61, 89, 44? (a) 41 (b) 61 (c) 89 (d) 44
  5. 5.Which number is the odd one out: 77, 12, 24, 48? (a) 77 (b) 12 (c) 24 (d) 48
  6. 6.Which number is the odd one out: 46, 11, 17, 89? (a) 46 (b) 11 (c) 17 (d) 89
  7. 7.Which number is the odd one out: 12, 96, 48, 28? (a) 12 (b) 96 (c) 48 (d) 28
  8. 8.Which number is the odd one out: 89, 67, 87, 36? (a) 89 (b) 67 (c) 87 (d) 36
  9. 9.Which number is the odd one out: 52, 89, 53, 43? (a) 52 (b) 89 (c) 53 (d) 43
  10. 10.Which number is the odd one out: 24, 26, 96, 78? (a) 24 (b) 26 (c) 96 (d) 78
  11. 11.Which number is the odd one out: 88, 4, 38, 64? (a) 88 (b) 4 (c) 38 (d) 64
  12. 12.Which number is the odd one out: 18, 23, 97, 53? (a) 18 (b) 23 (c) 97 (d) 53
  13. 13.Which number is the odd one out: 6, 17, 29, 19? (a) 6 (b) 17 (c) 29 (d) 19
  14. 14.Which number is the odd one out: 17, 41, 12, 53? (a) 17 (b) 41 (c) 12 (d) 53
  15. 15.Which number is the odd one out: 71, 59, 65, 73? (a) 71 (b) 59 (c) 65 (d) 73
  16. 16.Which number is the odd one out: 77, 56, 91, 40? (a) 77 (b) 56 (c) 91 (d) 40
  17. 17.Which number is the odd one out: 43, 37, 5, 90? (a) 43 (b) 37 (c) 5 (d) 90
  18. 18.Which number is the odd one out: 35, 28, 44, 76? (a) 35 (b) 28 (c) 44 (d) 76
  19. 19.Which number is the odd one out: 4, 8, 32, 16? (a) 4 (b) 8 (c) 32 (d) 16
  20. 20.Which number is the odd one out: 53, 37, 80, 23? (a) 53 (b) 37 (c) 80 (d) 23
  21. 21.Which number is the odd one out: 67, 7, 14, 53? (a) 67 (b) 7 (c) 14 (d) 53
  22. 22.Which number is the odd one out: 80, 88, 52, 40? (a) 80 (b) 88 (c) 52 (d) 40
  23. 23.Which number is the odd one out: 23, 31, 56, 47? (a) 23 (b) 31 (c) 56 (d) 47
  24. 24.Which number is the odd one out: 15, 2, 45, 99? (a) 15 (b) 2 (c) 45 (d) 99
  25. 25.Which number is the odd one out: 89, 13, 97, 72? (a) 89 (b) 13 (c) 97 (d) 72
  26. 26.Which number is the odd one out: 2, 83, 79, 68? (a) 2 (b) 83 (c) 79 (d) 68
  27. 27.Which number is the odd one out: 70, 24, 48, 12? (a) 70 (b) 24 (c) 48 (d) 12
  28. 28.Which number is the odd one out: 45, 89, 31, 59? (a) 45 (b) 89 (c) 31 (d) 59
  29. 29.Which number is the odd one out: 80, 90, 72, 8? (a) 80 (b) 90 (c) 72 (d) 8
  30. 30.Which number is the odd one out: 69, 19, 29, 31? (a) 69 (b) 19 (c) 29 (d) 31
  31. 31.Which number is the odd one out: 97, 73, 66, 59? (a) 97 (b) 73 (c) 66 (d) 59
  32. 32.Which number is the odd one out: 37, 17, 43, 26? (a) 37 (b) 17 (c) 43 (d) 26
  33. 33.Which number is the odd one out: 3, 31, 47, 60? (a) 3 (b) 31 (c) 47 (d) 60
  34. 34.Which number is the odd one out: 4, 59, 73, 83? (a) 4 (b) 59 (c) 73 (d) 83
  35. 35.Which number is the odd one out: 61, 91, 71, 41? (a) 61 (b) 91 (c) 71 (d) 41
  36. 36.Which number is the odd one out: 82, 71, 17, 61? (a) 82 (b) 71 (c) 17 (d) 61
  37. 37.Which number is the odd one out: 74, 89, 23, 73? (a) 74 (b) 89 (c) 23 (d) 73
  38. 38.Which number is the odd one out: 73, 41, 67, 82? (a) 73 (b) 41 (c) 67 (d) 82
  39. 39.Which number is the odd one out: 2, 73, 41, 66? (a) 2 (b) 73 (c) 41 (d) 66
  40. 40.Which number is the odd one out: 41, 99, 13, 31? (a) 41 (b) 99 (c) 13 (d) 31

Answer key

  1. 85
  2. 81
  3. 51
  4. 44
  5. 77
  6. 46
  7. 28
  8. 36
  9. 52
  10. 26
  11. 38
  12. 18
  13. 6
  14. 12
  15. 65
  16. 40
  17. 90
  18. 35
  19. 4
  20. 80
  21. 14
  22. 52
  23. 56
  24. 2
  25. 72
  26. 68
  27. 70
  28. 45
  29. 90
  30. 69
  31. 66
  32. 26
  33. 60
  34. 4
  35. 91
  36. 82
  37. 74
  38. 82
  39. 66
  40. 99

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