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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 810 · 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: 40, 85, 11, 41? (a) 40 (b) 85 (c) 11 (d) 41
  2. 2.Which number is the odd one out: 15, 30, 54, 18? (a) 15 (b) 30 (c) 54 (d) 18
  3. 3.Which number is the odd one out: 11, 3, 17, 81? (a) 11 (b) 3 (c) 17 (d) 81
  4. 4.Which number is the odd one out: 16, 67, 37, 79? (a) 16 (b) 67 (c) 37 (d) 79
  5. 5.Which number is the odd one out: 63, 83, 53, 97? (a) 63 (b) 83 (c) 53 (d) 97
  6. 6.Which number is the odd one out: 97, 61, 17, 76? (a) 97 (b) 61 (c) 17 (d) 76
  7. 7.Which number is the odd one out: 17, 26, 83, 89? (a) 17 (b) 26 (c) 83 (d) 89
  8. 8.Which number is the odd one out: 31, 43, 64, 23? (a) 31 (b) 43 (c) 64 (d) 23
  9. 9.Which number is the odd one out: 13, 94, 89, 53? (a) 13 (b) 94 (c) 89 (d) 53
  10. 10.Which number is the odd one out: 25, 5, 9, 81? (a) 25 (b) 5 (c) 9 (d) 81
  11. 11.Which number is the odd one out: 4, 50, 25, 95? (a) 4 (b) 50 (c) 25 (d) 95
  12. 12.Which number is the odd one out: 58, 65, 20, 68? (a) 58 (b) 65 (c) 20 (d) 68
  13. 13.Which number is the odd one out: 4, 64, 16, 38? (a) 4 (b) 64 (c) 16 (d) 38
  14. 14.Which number is the odd one out: 30, 95, 85, 96? (a) 30 (b) 95 (c) 85 (d) 96
  15. 15.Which number is the odd one out: 77, 98, 80, 91? (a) 77 (b) 98 (c) 80 (d) 91
  16. 16.Which number is the odd one out: 69, 89, 23, 11? (a) 69 (b) 89 (c) 23 (d) 11
  17. 17.Which number is the odd one out: 41, 11, 6, 79? (a) 41 (b) 11 (c) 6 (d) 79
  18. 18.Which number is the odd one out: 24, 88, 32, 12? (a) 24 (b) 88 (c) 32 (d) 12
  19. 19.Which number is the odd one out: 66, 11, 83, 19? (a) 66 (b) 11 (c) 83 (d) 19
  20. 20.Which number is the odd one out: 60, 17, 73, 83? (a) 60 (b) 17 (c) 73 (d) 83
  21. 21.Which number is the odd one out: 4, 16, 64, 99? (a) 4 (b) 16 (c) 64 (d) 99
  22. 22.Which number is the odd one out: 15, 48, 10, 55? (a) 15 (b) 48 (c) 10 (d) 55
  23. 23.Which number is the odd one out: 41, 84, 61, 17? (a) 41 (b) 84 (c) 61 (d) 17
  24. 24.Which number is the odd one out: 94, 48, 18, 72? (a) 94 (b) 48 (c) 18 (d) 72
  25. 25.Which number is the odd one out: 36, 79, 61, 53? (a) 36 (b) 79 (c) 61 (d) 53
  26. 26.Which number is the odd one out: 13, 41, 32, 61? (a) 13 (b) 41 (c) 32 (d) 61
  27. 27.Which number is the odd one out: 17, 87, 67, 71? (a) 17 (b) 87 (c) 67 (d) 71
  28. 28.Which number is the odd one out: 16, 5, 64, 4? (a) 16 (b) 5 (c) 64 (d) 4
  29. 29.Which number is the odd one out: 23, 78, 67, 41? (a) 23 (b) 78 (c) 67 (d) 41
  30. 30.Which number is the odd one out: 23, 68, 37, 59? (a) 23 (b) 68 (c) 37 (d) 59
  31. 31.Which number is the odd one out: 36, 83, 13, 17? (a) 36 (b) 83 (c) 13 (d) 17
  32. 32.Which number is the odd one out: 6, 72, 32, 18? (a) 6 (b) 72 (c) 32 (d) 18
  33. 33.Which number is the odd one out: 98, 7, 17, 83? (a) 98 (b) 7 (c) 17 (d) 83
  34. 34.Which number is the odd one out: 71, 89, 37, 51? (a) 71 (b) 89 (c) 37 (d) 51
  35. 35.Which number is the odd one out: 37, 41, 73, 84? (a) 37 (b) 41 (c) 73 (d) 84
  36. 36.Which number is the odd one out: 48, 12, 77, 24? (a) 48 (b) 12 (c) 77 (d) 24
  37. 37.Which number is the odd one out: 59, 89, 47, 84? (a) 59 (b) 89 (c) 47 (d) 84
  38. 38.Which number is the odd one out: 66, 72, 27, 48? (a) 66 (b) 72 (c) 27 (d) 48
  39. 39.Which number is the odd one out: 89, 97, 36, 37? (a) 89 (b) 97 (c) 36 (d) 37
  40. 40.Which number is the odd one out: 11, 23, 41, 44? (a) 11 (b) 23 (c) 41 (d) 44

Answer key

  1. 40
  2. 15
  3. 81
  4. 16
  5. 63
  6. 76
  7. 26
  8. 64
  9. 94
  10. 5
  11. 4
  12. 65
  13. 38
  14. 96
  15. 80
  16. 69
  17. 6
  18. 12
  19. 66
  20. 60
  21. 99
  22. 48
  23. 84
  24. 94
  25. 36
  26. 32
  27. 87
  28. 5
  29. 78
  30. 68
  31. 36
  32. 32
  33. 98
  34. 51
  35. 84
  36. 77
  37. 84
  38. 27
  39. 36
  40. 44

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