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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 308 · 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: 20, 28, 35, 44? (a) 20 (b) 28 (c) 35 (d) 44
  2. 2.Which number is the odd one out: 23, 17, 30, 31? (a) 23 (b) 17 (c) 30 (d) 31
  3. 3.Which number is the odd one out: 6, 73, 43, 2? (a) 6 (b) 73 (c) 43 (d) 2
  4. 4.Which number is the odd one out: 64, 41, 31, 43? (a) 64 (b) 41 (c) 31 (d) 43
  5. 5.Which number is the odd one out: 11, 64, 61, 79? (a) 11 (b) 64 (c) 61 (d) 79
  6. 6.Which number is the odd one out: 60, 12, 30, 11? (a) 60 (b) 12 (c) 30 (d) 11
  7. 7.Which number is the odd one out: 84, 7, 48, 32? (a) 84 (b) 7 (c) 48 (d) 32
  8. 8.Which number is the odd one out: 13, 43, 41, 42? (a) 13 (b) 43 (c) 41 (d) 42
  9. 9.Which number is the odd one out: 81, 40, 27, 9? (a) 81 (b) 40 (c) 27 (d) 9
  10. 10.Which number is the odd one out: 32, 40, 20, 8? (a) 32 (b) 40 (c) 20 (d) 8
  11. 11.Which number is the odd one out: 71, 6, 51, 67? (a) 71 (b) 6 (c) 51 (d) 67
  12. 12.Which number is the odd one out: 82, 31, 17, 23? (a) 82 (b) 31 (c) 17 (d) 23
  13. 13.Which number is the odd one out: 19, 89, 2, 34? (a) 19 (b) 89 (c) 2 (d) 34
  14. 14.Which number is the odd one out: 67, 33, 79, 61? (a) 67 (b) 33 (c) 79 (d) 61
  15. 15.Which number is the odd one out: 28, 43, 53, 23? (a) 28 (b) 43 (c) 53 (d) 23
  16. 16.Which number is the odd one out: 4, 16, 23, 64? (a) 4 (b) 16 (c) 23 (d) 64
  17. 17.Which number is the odd one out: 66, 48, 40, 6? (a) 66 (b) 48 (c) 40 (d) 6
  18. 18.Which number is the odd one out: 48, 24, 41, 96? (a) 48 (b) 24 (c) 41 (d) 96
  19. 19.Which number is the odd one out: 5, 59, 40, 43? (a) 5 (b) 59 (c) 40 (d) 43
  20. 20.Which number is the odd one out: 88, 16, 87, 64? (a) 88 (b) 16 (c) 87 (d) 64
  21. 21.Which number is the odd one out: 59, 67, 3, 54? (a) 59 (b) 67 (c) 3 (d) 54
  22. 22.Which number is the odd one out: 37, 41, 52, 17? (a) 37 (b) 41 (c) 52 (d) 17
  23. 23.Which number is the odd one out: 56, 43, 23, 2? (a) 56 (b) 43 (c) 23 (d) 2
  24. 24.Which number is the odd one out: 6, 43, 11, 53? (a) 6 (b) 43 (c) 11 (d) 53
  25. 25.Which number is the odd one out: 41, 79, 50, 67? (a) 41 (b) 79 (c) 50 (d) 67
  26. 26.Which number is the odd one out: 19, 25, 71, 79? (a) 19 (b) 25 (c) 71 (d) 79
  27. 27.Which number is the odd one out: 97, 31, 89, 55? (a) 97 (b) 31 (c) 89 (d) 55
  28. 28.Which number is the odd one out: 59, 79, 89, 60? (a) 59 (b) 79 (c) 89 (d) 60
  29. 29.Which number is the odd one out: 84, 99, 9, 81? (a) 84 (b) 99 (c) 9 (d) 81
  30. 30.Which number is the odd one out: 98, 15, 77, 14? (a) 98 (b) 15 (c) 77 (d) 14
  31. 31.Which number is the odd one out: 17, 29, 79, 24? (a) 17 (b) 29 (c) 79 (d) 24
  32. 32.Which number is the odd one out: 31, 67, 43, 12? (a) 31 (b) 67 (c) 43 (d) 12
  33. 33.Which number is the odd one out: 84, 77, 57, 12? (a) 84 (b) 77 (c) 57 (d) 12
  34. 34.Which number is the odd one out: 19, 71, 11, 12? (a) 19 (b) 71 (c) 11 (d) 12
  35. 35.Which number is the odd one out: 27, 90, 99, 30? (a) 27 (b) 90 (c) 99 (d) 30
  36. 36.Which number is the odd one out: 81, 36, 99, 60? (a) 81 (b) 36 (c) 99 (d) 60
  37. 37.Which number is the odd one out: 13, 64, 17, 11? (a) 13 (b) 64 (c) 17 (d) 11
  38. 38.Which number is the odd one out: 61, 20, 11, 41? (a) 61 (b) 20 (c) 11 (d) 41
  39. 39.Which number is the odd one out: 17, 83, 20, 13? (a) 17 (b) 83 (c) 20 (d) 13
  40. 40.Which number is the odd one out: 3, 66, 97, 23? (a) 3 (b) 66 (c) 97 (d) 23

Answer key

  1. 35
  2. 30
  3. 6
  4. 64
  5. 64
  6. 11
  7. 7
  8. 42
  9. 40
  10. 20
  11. 6
  12. 82
  13. 34
  14. 33
  15. 28
  16. 23
  17. 40
  18. 41
  19. 40
  20. 87
  21. 54
  22. 52
  23. 56
  24. 6
  25. 50
  26. 25
  27. 55
  28. 60
  29. 84
  30. 15
  31. 24
  32. 12
  33. 77
  34. 12
  35. 30
  36. 60
  37. 64
  38. 20
  39. 20
  40. 66

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