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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 103 · 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: 30, 98, 84, 60? (a) 30 (b) 98 (c) 84 (d) 60
  2. 2.Which number is the odd one out: 13, 51, 97, 71? (a) 13 (b) 51 (c) 97 (d) 71
  3. 3.Which number is the odd one out: 20, 18, 80, 32? (a) 20 (b) 18 (c) 80 (d) 32
  4. 4.Which number is the odd one out: 64, 90, 36, 16? (a) 64 (b) 90 (c) 36 (d) 16
  5. 5.Which number is the odd one out: 24, 47, 83, 2? (a) 24 (b) 47 (c) 83 (d) 2
  6. 6.Which number is the odd one out: 23, 2, 20, 13? (a) 23 (b) 2 (c) 20 (d) 13
  7. 7.Which number is the odd one out: 53, 29, 78, 73? (a) 53 (b) 29 (c) 78 (d) 73
  8. 8.Which number is the odd one out: 20, 37, 41, 13? (a) 20 (b) 37 (c) 41 (d) 13
  9. 9.Which number is the odd one out: 91, 70, 8, 35? (a) 91 (b) 70 (c) 8 (d) 35
  10. 10.Which number is the odd one out: 53, 59, 72, 31? (a) 53 (b) 59 (c) 72 (d) 31
  11. 11.Which number is the odd one out: 67, 73, 23, 32? (a) 67 (b) 73 (c) 23 (d) 32
  12. 12.Which number is the odd one out: 74, 71, 43, 19? (a) 74 (b) 71 (c) 43 (d) 19
  13. 13.Which number is the odd one out: 80, 40, 68, 77? (a) 80 (b) 40 (c) 68 (d) 77
  14. 14.Which number is the odd one out: 49, 24, 6, 96? (a) 49 (b) 24 (c) 6 (d) 96
  15. 15.Which number is the odd one out: 61, 85, 19, 17? (a) 61 (b) 85 (c) 19 (d) 17
  16. 16.Which number is the odd one out: 99, 97, 13, 79? (a) 99 (b) 97 (c) 13 (d) 79
  17. 17.Which number is the odd one out: 40, 56, 28, 15? (a) 40 (b) 56 (c) 28 (d) 15
  18. 18.Which number is the odd one out: 73, 77, 83, 61? (a) 73 (b) 77 (c) 83 (d) 61
  19. 19.Which number is the odd one out: 13, 48, 8, 24? (a) 13 (b) 48 (c) 8 (d) 24
  20. 20.Which number is the odd one out: 95, 27, 54, 18? (a) 95 (b) 27 (c) 54 (d) 18
  21. 21.Which number is the odd one out: 50, 11, 13, 29? (a) 50 (b) 11 (c) 13 (d) 29
  22. 22.Which number is the odd one out: 14, 17, 7, 97? (a) 14 (b) 17 (c) 7 (d) 97
  23. 23.Which number is the odd one out: 29, 13, 76, 19? (a) 29 (b) 13 (c) 76 (d) 19
  24. 24.Which number is the odd one out: 44, 15, 75, 51? (a) 44 (b) 15 (c) 75 (d) 51
  25. 25.Which number is the odd one out: 64, 40, 30, 16? (a) 64 (b) 40 (c) 30 (d) 16
  26. 26.Which number is the odd one out: 43, 17, 30, 13? (a) 43 (b) 17 (c) 30 (d) 13
  27. 27.Which number is the odd one out: 71, 29, 37, 21? (a) 71 (b) 29 (c) 37 (d) 21
  28. 28.Which number is the odd one out: 59, 17, 3, 39? (a) 59 (b) 17 (c) 3 (d) 39
  29. 29.Which number is the odd one out: 50, 23, 5, 19? (a) 50 (b) 23 (c) 5 (d) 19
  30. 30.Which number is the odd one out: 44, 48, 96, 86? (a) 44 (b) 48 (c) 96 (d) 86
  31. 31.Which number is the odd one out: 37, 31, 97, 49? (a) 37 (b) 31 (c) 97 (d) 49
  32. 32.Which number is the odd one out: 65, 18, 87, 90? (a) 65 (b) 18 (c) 87 (d) 90
  33. 33.Which number is the odd one out: 43, 54, 97, 67? (a) 43 (b) 54 (c) 97 (d) 67
  34. 34.Which number is the odd one out: 79, 7, 70, 71? (a) 79 (b) 7 (c) 70 (d) 71
  35. 35.Which number is the odd one out: 30, 64, 92, 16? (a) 30 (b) 64 (c) 92 (d) 16
  36. 36.Which number is the odd one out: 18, 64, 16, 36? (a) 18 (b) 64 (c) 16 (d) 36
  37. 37.Which number is the odd one out: 81, 11, 17, 83? (a) 81 (b) 11 (c) 17 (d) 83
  38. 38.Which number is the odd one out: 32, 42, 8, 28? (a) 32 (b) 42 (c) 8 (d) 28
  39. 39.Which number is the odd one out: 11, 90, 5, 89? (a) 11 (b) 90 (c) 5 (d) 89
  40. 40.Which number is the odd one out: 73, 29, 82, 89? (a) 73 (b) 29 (c) 82 (d) 89

Answer key

  1. 98
  2. 51
  3. 18
  4. 90
  5. 24
  6. 20
  7. 78
  8. 20
  9. 8
  10. 72
  11. 32
  12. 74
  13. 77
  14. 49
  15. 85
  16. 99
  17. 15
  18. 77
  19. 13
  20. 95
  21. 50
  22. 14
  23. 76
  24. 44
  25. 30
  26. 30
  27. 21
  28. 39
  29. 50
  30. 86
  31. 49
  32. 65
  33. 54
  34. 70
  35. 30
  36. 18
  37. 81
  38. 42
  39. 90
  40. 82

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