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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 865 · 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: 75, 89, 19, 31? (a) 75 (b) 89 (c) 19 (d) 31
  2. 2.Which number is the odd one out: 9, 17, 61, 13? (a) 9 (b) 17 (c) 61 (d) 13
  3. 3.Which number is the odd one out: 35, 64, 91, 70? (a) 35 (b) 64 (c) 91 (d) 70
  4. 4.Which number is the odd one out: 47, 30, 31, 67? (a) 47 (b) 30 (c) 31 (d) 67
  5. 5.Which number is the odd one out: 96, 60, 85, 24? (a) 96 (b) 60 (c) 85 (d) 24
  6. 6.Which number is the odd one out: 81, 67, 83, 37? (a) 81 (b) 67 (c) 83 (d) 37
  7. 7.Which number is the odd one out: 32, 88, 10, 80? (a) 32 (b) 88 (c) 10 (d) 80
  8. 8.Which number is the odd one out: 81, 29, 17, 11? (a) 81 (b) 29 (c) 17 (d) 11
  9. 9.Which number is the odd one out: 48, 8, 18, 44? (a) 48 (b) 8 (c) 18 (d) 44
  10. 10.Which number is the odd one out: 50, 27, 45, 10? (a) 50 (b) 27 (c) 45 (d) 10
  11. 11.Which number is the odd one out: 70, 48, 8, 96? (a) 70 (b) 48 (c) 8 (d) 96
  12. 12.Which number is the odd one out: 11, 79, 76, 61? (a) 11 (b) 79 (c) 76 (d) 61
  13. 13.Which number is the odd one out: 2, 23, 28, 31? (a) 2 (b) 23 (c) 28 (d) 31
  14. 14.Which number is the odd one out: 91, 64, 32, 16? (a) 91 (b) 64 (c) 32 (d) 16
  15. 15.Which number is the odd one out: 43, 61, 31, 27? (a) 43 (b) 61 (c) 31 (d) 27
  16. 16.Which number is the odd one out: 90, 31, 43, 2? (a) 90 (b) 31 (c) 43 (d) 2
  17. 17.Which number is the odd one out: 20, 43, 97, 29? (a) 20 (b) 43 (c) 97 (d) 29
  18. 18.Which number is the odd one out: 59, 18, 67, 79? (a) 59 (b) 18 (c) 67 (d) 79
  19. 19.Which number is the odd one out: 45, 54, 51, 90? (a) 45 (b) 54 (c) 51 (d) 90
  20. 20.Which number is the odd one out: 89, 17, 79, 58? (a) 89 (b) 17 (c) 79 (d) 58
  21. 21.Which number is the odd one out: 51, 53, 67, 31? (a) 51 (b) 53 (c) 67 (d) 31
  22. 22.Which number is the odd one out: 31, 86, 44, 92? (a) 31 (b) 86 (c) 44 (d) 92
  23. 23.Which number is the odd one out: 41, 24, 97, 79? (a) 41 (b) 24 (c) 97 (d) 79
  24. 24.Which number is the odd one out: 18, 48, 5, 72? (a) 18 (b) 48 (c) 5 (d) 72
  25. 25.Which number is the odd one out: 70, 83, 7, 5? (a) 70 (b) 83 (c) 7 (d) 5
  26. 26.Which number is the odd one out: 59, 67, 98, 89? (a) 59 (b) 67 (c) 98 (d) 89
  27. 27.Which number is the odd one out: 23, 13, 83, 93? (a) 23 (b) 13 (c) 83 (d) 93
  28. 28.Which number is the odd one out: 58, 29, 67, 71? (a) 58 (b) 29 (c) 67 (d) 71
  29. 29.Which number is the odd one out: 92, 71, 2, 67? (a) 92 (b) 71 (c) 2 (d) 67
  30. 30.Which number is the odd one out: 89, 95, 16, 5? (a) 89 (b) 95 (c) 16 (d) 5
  31. 31.Which number is the odd one out: 33, 11, 79, 41? (a) 33 (b) 11 (c) 79 (d) 41
  32. 32.Which number is the odd one out: 5, 47, 43, 90? (a) 5 (b) 47 (c) 43 (d) 90
  33. 33.Which number is the odd one out: 97, 27, 79, 29? (a) 97 (b) 27 (c) 79 (d) 29
  34. 34.Which number is the odd one out: 29, 50, 2, 11? (a) 29 (b) 50 (c) 2 (d) 11
  35. 35.Which number is the odd one out: 71, 47, 85, 97? (a) 71 (b) 47 (c) 85 (d) 97
  36. 36.Which number is the odd one out: 75, 85, 55, 78? (a) 75 (b) 85 (c) 55 (d) 78
  37. 37.Which number is the odd one out: 59, 71, 61, 51? (a) 59 (b) 71 (c) 61 (d) 51
  38. 38.Which number is the odd one out: 96, 41, 29, 17? (a) 96 (b) 41 (c) 29 (d) 17
  39. 39.Which number is the odd one out: 16, 3, 52, 64? (a) 16 (b) 3 (c) 52 (d) 64
  40. 40.Which number is the odd one out: 43, 17, 55, 11? (a) 43 (b) 17 (c) 55 (d) 11

Answer key

  1. 75
  2. 9
  3. 64
  4. 30
  5. 85
  6. 81
  7. 10
  8. 81
  9. 18
  10. 27
  11. 70
  12. 76
  13. 28
  14. 91
  15. 27
  16. 90
  17. 20
  18. 18
  19. 51
  20. 58
  21. 51
  22. 31
  23. 24
  24. 5
  25. 70
  26. 98
  27. 93
  28. 58
  29. 92
  30. 16
  31. 33
  32. 90
  33. 27
  34. 50
  35. 85
  36. 78
  37. 51
  38. 96
  39. 3
  40. 55

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