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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 323 · 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: 41, 8, 19, 71? (a) 41 (b) 8 (c) 19 (d) 71
  2. 2.Which number is the odd one out: 2, 14, 83, 17? (a) 2 (b) 14 (c) 83 (d) 17
  3. 3.Which number is the odd one out: 19, 43, 81, 11? (a) 19 (b) 43 (c) 81 (d) 11
  4. 4.Which number is the odd one out: 71, 17, 88, 89? (a) 71 (b) 17 (c) 88 (d) 89
  5. 5.Which number is the odd one out: 13, 83, 6, 19? (a) 13 (b) 83 (c) 6 (d) 19
  6. 6.Which number is the odd one out: 17, 61, 29, 4? (a) 17 (b) 61 (c) 29 (d) 4
  7. 7.Which number is the odd one out: 72, 79, 47, 17? (a) 72 (b) 79 (c) 47 (d) 17
  8. 8.Which number is the odd one out: 67, 71, 27, 3? (a) 67 (b) 71 (c) 27 (d) 3
  9. 9.Which number is the odd one out: 13, 23, 25, 83? (a) 13 (b) 23 (c) 25 (d) 83
  10. 10.Which number is the odd one out: 11, 66, 23, 2? (a) 11 (b) 66 (c) 23 (d) 2
  11. 11.Which number is the odd one out: 17, 11, 73, 26? (a) 17 (b) 11 (c) 73 (d) 26
  12. 12.Which number is the odd one out: 31, 13, 76, 61? (a) 31 (b) 13 (c) 76 (d) 61
  13. 13.Which number is the odd one out: 36, 25, 85, 75? (a) 36 (b) 25 (c) 85 (d) 75
  14. 14.Which number is the odd one out: 59, 17, 49, 71? (a) 59 (b) 17 (c) 49 (d) 71
  15. 15.Which number is the odd one out: 53, 13, 92, 31? (a) 53 (b) 13 (c) 92 (d) 31
  16. 16.Which number is the odd one out: 35, 20, 21, 33? (a) 35 (b) 20 (c) 21 (d) 33
  17. 17.Which number is the odd one out: 17, 16, 97, 31? (a) 17 (b) 16 (c) 97 (d) 31
  18. 18.Which number is the odd one out: 19, 29, 3, 45? (a) 19 (b) 29 (c) 3 (d) 45
  19. 19.Which number is the odd one out: 6, 41, 19, 83? (a) 6 (b) 41 (c) 19 (d) 83
  20. 20.Which number is the odd one out: 43, 76, 17, 19? (a) 43 (b) 76 (c) 17 (d) 19
  21. 21.Which number is the odd one out: 17, 79, 23, 24? (a) 17 (b) 79 (c) 23 (d) 24
  22. 22.Which number is the odd one out: 24, 48, 4, 88? (a) 24 (b) 48 (c) 4 (d) 88
  23. 23.Which number is the odd one out: 66, 8, 12, 78? (a) 66 (b) 8 (c) 12 (d) 78
  24. 24.Which number is the odd one out: 11, 97, 32, 37? (a) 11 (b) 97 (c) 32 (d) 37
  25. 25.Which number is the odd one out: 12, 23, 71, 61? (a) 12 (b) 23 (c) 71 (d) 61
  26. 26.Which number is the odd one out: 11, 90, 45, 54? (a) 11 (b) 90 (c) 45 (d) 54
  27. 27.Which number is the odd one out: 53, 99, 67, 29? (a) 53 (b) 99 (c) 67 (d) 29
  28. 28.Which number is the odd one out: 67, 17, 81, 73? (a) 67 (b) 17 (c) 81 (d) 73
  29. 29.Which number is the odd one out: 41, 89, 13, 76? (a) 41 (b) 89 (c) 13 (d) 76
  30. 30.Which number is the odd one out: 80, 25, 32, 8? (a) 80 (b) 25 (c) 32 (d) 8
  31. 31.Which number is the odd one out: 9, 99, 81, 53? (a) 9 (b) 99 (c) 81 (d) 53
  32. 32.Which number is the odd one out: 83, 73, 46, 2? (a) 83 (b) 73 (c) 46 (d) 2
  33. 33.Which number is the odd one out: 65, 59, 90, 41? (a) 65 (b) 59 (c) 90 (d) 41
  34. 34.Which number is the odd one out: 37, 85, 59, 83? (a) 37 (b) 85 (c) 59 (d) 83
  35. 35.Which number is the odd one out: 50, 17, 59, 37? (a) 50 (b) 17 (c) 59 (d) 37
  36. 36.Which number is the odd one out: 17, 37, 73, 75? (a) 17 (b) 37 (c) 73 (d) 75
  37. 37.Which number is the odd one out: 13, 17, 2, 59? (a) 13 (b) 17 (c) 2 (d) 59
  38. 38.Which number is the odd one out: 70, 45, 21, 14? (a) 70 (b) 45 (c) 21 (d) 14
  39. 39.Which number is the odd one out: 41, 73, 6, 23? (a) 41 (b) 73 (c) 6 (d) 23
  40. 40.Which number is the odd one out: 67, 47, 60, 43? (a) 67 (b) 47 (c) 60 (d) 43

Answer key

  1. 8
  2. 14
  3. 81
  4. 88
  5. 6
  6. 4
  7. 72
  8. 27
  9. 25
  10. 66
  11. 26
  12. 76
  13. 36
  14. 49
  15. 92
  16. 20
  17. 16
  18. 45
  19. 6
  20. 76
  21. 24
  22. 4
  23. 8
  24. 32
  25. 12
  26. 11
  27. 99
  28. 81
  29. 76
  30. 25
  31. 53
  32. 46
  33. 90
  34. 85
  35. 50
  36. 75
  37. 2
  38. 45
  39. 6
  40. 60

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