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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 938 · 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: 27, 41, 73, 19? (a) 27 (b) 41 (c) 73 (d) 19
  2. 2.Which number is the odd one out: 11, 73, 90, 85? (a) 11 (b) 73 (c) 90 (d) 85
  3. 3.Which number is the odd one out: 3, 45, 43, 79? (a) 3 (b) 45 (c) 43 (d) 79
  4. 4.Which number is the odd one out: 93, 43, 41, 83? (a) 93 (b) 43 (c) 41 (d) 83
  5. 5.Which number is the odd one out: 57, 19, 60, 23? (a) 57 (b) 19 (c) 60 (d) 23
  6. 6.Which number is the odd one out: 36, 87, 19, 13? (a) 36 (b) 87 (c) 19 (d) 13
  7. 7.Which number is the odd one out: 17, 24, 73, 3? (a) 17 (b) 24 (c) 73 (d) 3
  8. 8.Which number is the odd one out: 49, 70, 35, 16? (a) 49 (b) 70 (c) 35 (d) 16
  9. 9.Which number is the odd one out: 37, 59, 61, 10? (a) 37 (b) 59 (c) 61 (d) 10
  10. 10.Which number is the odd one out: 88, 8, 68, 62? (a) 88 (b) 8 (c) 68 (d) 62
  11. 11.Which number is the odd one out: 79, 57, 6, 53? (a) 79 (b) 57 (c) 6 (d) 53
  12. 12.Which number is the odd one out: 26, 82, 62, 25? (a) 26 (b) 82 (c) 62 (d) 25
  13. 13.Which number is the odd one out: 79, 97, 42, 19? (a) 79 (b) 97 (c) 42 (d) 19
  14. 14.Which number is the odd one out: 73, 2, 17, 60? (a) 73 (b) 2 (c) 17 (d) 60
  15. 15.Which number is the odd one out: 78, 30, 65, 6? (a) 78 (b) 30 (c) 65 (d) 6
  16. 16.Which number is the odd one out: 40, 20, 80, 54? (a) 40 (b) 20 (c) 80 (d) 54
  17. 17.Which number is the odd one out: 76, 92, 71, 68? (a) 76 (b) 92 (c) 71 (d) 68
  18. 18.Which number is the odd one out: 67, 12, 73, 3? (a) 67 (b) 12 (c) 73 (d) 3
  19. 19.Which number is the odd one out: 30, 84, 44, 28? (a) 30 (b) 84 (c) 44 (d) 28
  20. 20.Which number is the odd one out: 3, 31, 99, 19? (a) 3 (b) 31 (c) 99 (d) 19
  21. 21.Which number is the odd one out: 57, 37, 31, 29? (a) 57 (b) 37 (c) 31 (d) 29
  22. 22.Which number is the odd one out: 43, 83, 98, 73? (a) 43 (b) 83 (c) 98 (d) 73
  23. 23.Which number is the odd one out: 16, 48, 18, 64? (a) 16 (b) 48 (c) 18 (d) 64
  24. 24.Which number is the odd one out: 31, 79, 67, 42? (a) 31 (b) 79 (c) 67 (d) 42
  25. 25.Which number is the odd one out: 14, 35, 21, 90? (a) 14 (b) 35 (c) 21 (d) 90
  26. 26.Which number is the odd one out: 13, 38, 53, 23? (a) 13 (b) 38 (c) 53 (d) 23
  27. 27.Which number is the odd one out: 40, 43, 50, 88? (a) 40 (b) 43 (c) 50 (d) 88
  28. 28.Which number is the odd one out: 79, 69, 83, 31? (a) 79 (b) 69 (c) 83 (d) 31
  29. 29.Which number is the odd one out: 13, 70, 97, 73? (a) 13 (b) 70 (c) 97 (d) 73
  30. 30.Which number is the odd one out: 97, 3, 45, 13? (a) 97 (b) 3 (c) 45 (d) 13
  31. 31.Which number is the odd one out: 17, 63, 53, 71? (a) 17 (b) 63 (c) 53 (d) 71
  32. 32.Which number is the odd one out: 67, 53, 20, 89? (a) 67 (b) 53 (c) 20 (d) 89
  33. 33.Which number is the odd one out: 30, 54, 45, 27? (a) 30 (b) 54 (c) 45 (d) 27
  34. 34.Which number is the odd one out: 70, 35, 95, 76? (a) 70 (b) 35 (c) 95 (d) 76
  35. 35.Which number is the odd one out: 33, 41, 71, 89? (a) 33 (b) 41 (c) 71 (d) 89
  36. 36.Which number is the odd one out: 43, 89, 24, 67? (a) 43 (b) 89 (c) 24 (d) 67
  37. 37.Which number is the odd one out: 38, 79, 74, 26? (a) 38 (b) 79 (c) 74 (d) 26
  38. 38.Which number is the odd one out: 29, 43, 44, 79? (a) 29 (b) 43 (c) 44 (d) 79
  39. 39.Which number is the odd one out: 71, 47, 21, 84? (a) 71 (b) 47 (c) 21 (d) 84
  40. 40.Which number is the odd one out: 24, 32, 66, 8? (a) 24 (b) 32 (c) 66 (d) 8

Answer key

  1. 27
  2. 90
  3. 45
  4. 93
  5. 60
  6. 36
  7. 24
  8. 16
  9. 10
  10. 62
  11. 6
  12. 25
  13. 42
  14. 60
  15. 65
  16. 54
  17. 71
  18. 12
  19. 30
  20. 99
  21. 57
  22. 98
  23. 18
  24. 42
  25. 90
  26. 38
  27. 43
  28. 69
  29. 70
  30. 45
  31. 63
  32. 20
  33. 30
  34. 76
  35. 33
  36. 24
  37. 79
  38. 44
  39. 84
  40. 66

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