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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 516 · 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: 23, 97, 46, 19? (a) 23 (b) 97 (c) 46 (d) 19
  2. 2.Which number is the odd one out: 43, 67, 31, 27? (a) 43 (b) 67 (c) 31 (d) 27
  3. 3.Which number is the odd one out: 11, 47, 32, 53? (a) 11 (b) 47 (c) 32 (d) 53
  4. 4.Which number is the odd one out: 40, 66, 6, 24? (a) 40 (b) 66 (c) 6 (d) 24
  5. 5.Which number is the odd one out: 61, 83, 28, 73? (a) 61 (b) 83 (c) 28 (d) 73
  6. 6.Which number is the odd one out: 16, 4, 64, 90? (a) 16 (b) 4 (c) 64 (d) 90
  7. 7.Which number is the odd one out: 20, 8, 41, 40? (a) 20 (b) 8 (c) 41 (d) 40
  8. 8.Which number is the odd one out: 41, 7, 98, 59? (a) 41 (b) 7 (c) 98 (d) 59
  9. 9.Which number is the odd one out: 67, 98, 37, 41? (a) 67 (b) 98 (c) 37 (d) 41
  10. 10.Which number is the odd one out: 49, 34, 78, 66? (a) 49 (b) 34 (c) 78 (d) 66
  11. 11.Which number is the odd one out: 61, 59, 64, 89? (a) 61 (b) 59 (c) 64 (d) 89
  12. 12.Which number is the odd one out: 13, 67, 86, 31? (a) 13 (b) 67 (c) 86 (d) 31
  13. 13.Which number is the odd one out: 99, 61, 23, 71? (a) 99 (b) 61 (c) 23 (d) 71
  14. 14.Which number is the odd one out: 2, 33, 93, 87? (a) 2 (b) 33 (c) 93 (d) 87
  15. 15.Which number is the odd one out: 5, 79, 13, 80? (a) 5 (b) 79 (c) 13 (d) 80
  16. 16.Which number is the odd one out: 99, 18, 6, 79? (a) 99 (b) 18 (c) 6 (d) 79
  17. 17.Which number is the odd one out: 13, 89, 17, 99? (a) 13 (b) 89 (c) 17 (d) 99
  18. 18.Which number is the odd one out: 31, 33, 6, 78? (a) 31 (b) 33 (c) 6 (d) 78
  19. 19.Which number is the odd one out: 19, 31, 67, 85? (a) 19 (b) 31 (c) 67 (d) 85
  20. 20.Which number is the odd one out: 83, 60, 61, 67? (a) 83 (b) 60 (c) 61 (d) 67
  21. 21.Which number is the odd one out: 29, 20, 43, 19? (a) 29 (b) 20 (c) 43 (d) 19
  22. 22.Which number is the odd one out: 41, 12, 53, 19? (a) 41 (b) 12 (c) 53 (d) 19
  23. 23.Which number is the odd one out: 31, 41, 96, 71? (a) 31 (b) 41 (c) 96 (d) 71
  24. 24.Which number is the odd one out: 48, 96, 8, 70? (a) 48 (b) 96 (c) 8 (d) 70
  25. 25.Which number is the odd one out: 85, 81, 99, 9? (a) 85 (b) 81 (c) 99 (d) 9
  26. 26.Which number is the odd one out: 75, 19, 73, 79? (a) 75 (b) 19 (c) 73 (d) 79
  27. 27.Which number is the odd one out: 2, 23, 6, 13? (a) 2 (b) 23 (c) 6 (d) 13
  28. 28.Which number is the odd one out: 82, 13, 17, 19? (a) 82 (b) 13 (c) 17 (d) 19
  29. 29.Which number is the odd one out: 59, 88, 19, 61? (a) 59 (b) 88 (c) 19 (d) 61
  30. 30.Which number is the odd one out: 67, 56, 73, 29? (a) 67 (b) 56 (c) 73 (d) 29
  31. 31.Which number is the odd one out: 8, 14, 96, 24? (a) 8 (b) 14 (c) 96 (d) 24
  32. 32.Which number is the odd one out: 37, 17, 43, 54? (a) 37 (b) 17 (c) 43 (d) 54
  33. 33.Which number is the odd one out: 98, 8, 14, 56? (a) 98 (b) 8 (c) 14 (d) 56
  34. 34.Which number is the odd one out: 23, 59, 13, 94? (a) 23 (b) 59 (c) 13 (d) 94
  35. 35.Which number is the odd one out: 67, 31, 54, 53? (a) 67 (b) 31 (c) 54 (d) 53
  36. 36.Which number is the odd one out: 41, 31, 52, 83? (a) 41 (b) 31 (c) 52 (d) 83
  37. 37.Which number is the odd one out: 11, 29, 21, 31? (a) 11 (b) 29 (c) 21 (d) 31
  38. 38.Which number is the odd one out: 71, 95, 40, 23? (a) 71 (b) 95 (c) 40 (d) 23
  39. 39.Which number is the odd one out: 14, 73, 29, 61? (a) 14 (b) 73 (c) 29 (d) 61
  40. 40.Which number is the odd one out: 71, 61, 43, 22? (a) 71 (b) 61 (c) 43 (d) 22

Answer key

  1. 46
  2. 27
  3. 32
  4. 40
  5. 28
  6. 90
  7. 41
  8. 98
  9. 98
  10. 49
  11. 64
  12. 86
  13. 99
  14. 2
  15. 80
  16. 79
  17. 99
  18. 31
  19. 85
  20. 60
  21. 20
  22. 12
  23. 96
  24. 70
  25. 85
  26. 75
  27. 6
  28. 82
  29. 88
  30. 56
  31. 14
  32. 54
  33. 8
  34. 94
  35. 54
  36. 52
  37. 21
  38. 40
  39. 14
  40. 22

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