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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 500 · 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: 90, 21, 35, 98? (a) 90 (b) 21 (c) 35 (d) 98
  2. 2.Which number is the odd one out: 6, 66, 33, 13? (a) 6 (b) 66 (c) 33 (d) 13
  3. 3.Which number is the odd one out: 37, 78, 3, 2? (a) 37 (b) 78 (c) 3 (d) 2
  4. 4.Which number is the odd one out: 30, 11, 97, 3? (a) 30 (b) 11 (c) 97 (d) 3
  5. 5.Which number is the odd one out: 19, 8, 37, 89? (a) 19 (b) 8 (c) 37 (d) 89
  6. 6.Which number is the odd one out: 64, 16, 55, 25? (a) 64 (b) 16 (c) 55 (d) 25
  7. 7.Which number is the odd one out: 40, 96, 55, 65? (a) 40 (b) 96 (c) 55 (d) 65
  8. 8.Which number is the odd one out: 13, 89, 20, 23? (a) 13 (b) 89 (c) 20 (d) 23
  9. 9.Which number is the odd one out: 86, 79, 2, 23? (a) 86 (b) 79 (c) 2 (d) 23
  10. 10.Which number is the odd one out: 33, 38, 83, 3? (a) 33 (b) 38 (c) 83 (d) 3
  11. 11.Which number is the odd one out: 83, 17, 28, 2? (a) 83 (b) 17 (c) 28 (d) 2
  12. 12.Which number is the odd one out: 47, 49, 29, 7? (a) 47 (b) 49 (c) 29 (d) 7
  13. 13.Which number is the odd one out: 7, 9, 81, 49? (a) 7 (b) 9 (c) 81 (d) 49
  14. 14.Which number is the odd one out: 39, 13, 67, 19? (a) 39 (b) 13 (c) 67 (d) 19
  15. 15.Which number is the odd one out: 5, 13, 16, 95? (a) 5 (b) 13 (c) 16 (d) 95
  16. 16.Which number is the odd one out: 60, 78, 55, 12? (a) 60 (b) 78 (c) 55 (d) 12
  17. 17.Which number is the odd one out: 84, 71, 47, 97? (a) 84 (b) 71 (c) 47 (d) 97
  18. 18.Which number is the odd one out: 46, 34, 13, 2? (a) 46 (b) 34 (c) 13 (d) 2
  19. 19.Which number is the odd one out: 64, 36, 72, 4? (a) 64 (b) 36 (c) 72 (d) 4
  20. 20.Which number is the odd one out: 75, 37, 19, 3? (a) 75 (b) 37 (c) 19 (d) 3
  21. 21.Which number is the odd one out: 16, 64, 63, 49? (a) 16 (b) 64 (c) 63 (d) 49
  22. 22.Which number is the odd one out: 48, 70, 88, 96? (a) 48 (b) 70 (c) 88 (d) 96
  23. 23.Which number is the odd one out: 70, 45, 81, 49? (a) 70 (b) 45 (c) 81 (d) 49
  24. 24.Which number is the odd one out: 35, 19, 83, 53? (a) 35 (b) 19 (c) 83 (d) 53
  25. 25.Which number is the odd one out: 31, 14, 73, 11? (a) 31 (b) 14 (c) 73 (d) 11
  26. 26.Which number is the odd one out: 32, 84, 64, 16? (a) 32 (b) 84 (c) 64 (d) 16
  27. 27.Which number is the odd one out: 17, 53, 24, 83? (a) 17 (b) 53 (c) 24 (d) 83
  28. 28.Which number is the odd one out: 52, 73, 41, 61? (a) 52 (b) 73 (c) 41 (d) 61
  29. 29.Which number is the odd one out: 28, 71, 67, 41? (a) 28 (b) 71 (c) 67 (d) 41
  30. 30.Which number is the odd one out: 19, 25, 37, 71? (a) 19 (b) 25 (c) 37 (d) 71
  31. 31.Which number is the odd one out: 78, 59, 29, 41? (a) 78 (b) 59 (c) 29 (d) 41
  32. 32.Which number is the odd one out: 78, 40, 20, 80? (a) 78 (b) 40 (c) 20 (d) 80
  33. 33.Which number is the odd one out: 11, 46, 31, 61? (a) 11 (b) 46 (c) 31 (d) 61
  34. 34.Which number is the odd one out: 6, 29, 43, 61? (a) 6 (b) 29 (c) 43 (d) 61
  35. 35.Which number is the odd one out: 61, 32, 48, 24? (a) 61 (b) 32 (c) 48 (d) 24
  36. 36.Which number is the odd one out: 25, 41, 79, 31? (a) 25 (b) 41 (c) 79 (d) 31
  37. 37.Which number is the odd one out: 96, 48, 21, 84? (a) 96 (b) 48 (c) 21 (d) 84
  38. 38.Which number is the odd one out: 88, 61, 89, 73? (a) 88 (b) 61 (c) 89 (d) 73
  39. 39.Which number is the odd one out: 97, 41, 19, 68? (a) 97 (b) 41 (c) 19 (d) 68
  40. 40.Which number is the odd one out: 35, 47, 67, 89? (a) 35 (b) 47 (c) 67 (d) 89

Answer key

  1. 90
  2. 13
  3. 78
  4. 30
  5. 8
  6. 55
  7. 96
  8. 20
  9. 86
  10. 38
  11. 28
  12. 49
  13. 7
  14. 39
  15. 16
  16. 55
  17. 84
  18. 13
  19. 72
  20. 75
  21. 63
  22. 70
  23. 70
  24. 35
  25. 14
  26. 84
  27. 24
  28. 52
  29. 28
  30. 25
  31. 78
  32. 78
  33. 46
  34. 6
  35. 61
  36. 25
  37. 21
  38. 88
  39. 68
  40. 35

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