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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 290 · 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: 81, 13, 17, 89? (a) 81 (b) 13 (c) 17 (d) 89
  2. 2.Which number is the odd one out: 65, 50, 55, 6? (a) 65 (b) 50 (c) 55 (d) 6
  3. 3.Which number is the odd one out: 81, 26, 82, 34? (a) 81 (b) 26 (c) 82 (d) 34
  4. 4.Which number is the odd one out: 20, 13, 71, 43? (a) 20 (b) 13 (c) 71 (d) 43
  5. 5.Which number is the odd one out: 44, 81, 16, 8? (a) 44 (b) 81 (c) 16 (d) 8
  6. 6.Which number is the odd one out: 3, 41, 2, 60? (a) 3 (b) 41 (c) 2 (d) 60
  7. 7.Which number is the odd one out: 61, 3, 59, 9? (a) 61 (b) 3 (c) 59 (d) 9
  8. 8.Which number is the odd one out: 23, 89, 19, 12? (a) 23 (b) 89 (c) 19 (d) 12
  9. 9.Which number is the odd one out: 53, 63, 71, 31? (a) 53 (b) 63 (c) 71 (d) 31
  10. 10.Which number is the odd one out: 91, 9, 27, 81? (a) 91 (b) 9 (c) 27 (d) 81
  11. 11.Which number is the odd one out: 32, 65, 96, 24? (a) 32 (b) 65 (c) 96 (d) 24
  12. 12.Which number is the odd one out: 55, 19, 31, 13? (a) 55 (b) 19 (c) 31 (d) 13
  13. 13.Which number is the odd one out: 86, 48, 8, 24? (a) 86 (b) 48 (c) 8 (d) 24
  14. 14.Which number is the odd one out: 10, 43, 67, 19? (a) 10 (b) 43 (c) 67 (d) 19
  15. 15.Which number is the odd one out: 17, 71, 73, 24? (a) 17 (b) 71 (c) 73 (d) 24
  16. 16.Which number is the odd one out: 72, 11, 17, 79? (a) 72 (b) 11 (c) 17 (d) 79
  17. 17.Which number is the odd one out: 10, 53, 89, 71? (a) 10 (b) 53 (c) 89 (d) 71
  18. 18.Which number is the odd one out: 13, 29, 98, 89? (a) 13 (b) 29 (c) 98 (d) 89
  19. 19.Which number is the odd one out: 9, 99, 81, 44? (a) 9 (b) 99 (c) 81 (d) 44
  20. 20.Which number is the odd one out: 19, 77, 13, 71? (a) 19 (b) 77 (c) 13 (d) 71
  21. 21.Which number is the odd one out: 29, 70, 73, 55? (a) 29 (b) 70 (c) 73 (d) 55
  22. 22.Which number is the odd one out: 14, 41, 29, 73? (a) 14 (b) 41 (c) 29 (d) 73
  23. 23.Which number is the odd one out: 11, 17, 73, 4? (a) 11 (b) 17 (c) 73 (d) 4
  24. 24.Which number is the odd one out: 33, 41, 89, 73? (a) 33 (b) 41 (c) 89 (d) 73
  25. 25.Which number is the odd one out: 67, 3, 97, 48? (a) 67 (b) 3 (c) 97 (d) 48
  26. 26.Which number is the odd one out: 17, 14, 47, 23? (a) 17 (b) 14 (c) 47 (d) 23
  27. 27.Which number is the odd one out: 16, 48, 66, 6? (a) 16 (b) 48 (c) 66 (d) 6
  28. 28.Which number is the odd one out: 70, 14, 80, 56? (a) 70 (b) 14 (c) 80 (d) 56
  29. 29.Which number is the odd one out: 29, 41, 58, 59? (a) 29 (b) 41 (c) 58 (d) 59
  30. 30.Which number is the odd one out: 59, 19, 78, 43? (a) 59 (b) 19 (c) 78 (d) 43
  31. 31.Which number is the odd one out: 65, 24, 96, 88? (a) 65 (b) 24 (c) 96 (d) 88
  32. 32.Which number is the odd one out: 79, 97, 87, 59? (a) 79 (b) 97 (c) 87 (d) 59
  33. 33.Which number is the odd one out: 32, 2, 48, 24? (a) 32 (b) 2 (c) 48 (d) 24
  34. 34.Which number is the odd one out: 26, 97, 83, 13? (a) 26 (b) 97 (c) 83 (d) 13
  35. 35.Which number is the odd one out: 34, 41, 11, 73? (a) 34 (b) 41 (c) 11 (d) 73
  36. 36.Which number is the odd one out: 97, 41, 82, 71? (a) 97 (b) 41 (c) 82 (d) 71
  37. 37.Which number is the odd one out: 37, 97, 22, 71? (a) 37 (b) 97 (c) 22 (d) 71
  38. 38.Which number is the odd one out: 29, 31, 78, 37? (a) 29 (b) 31 (c) 78 (d) 37
  39. 39.Which number is the odd one out: 82, 83, 17, 73? (a) 82 (b) 83 (c) 17 (d) 73
  40. 40.Which number is the odd one out: 66, 57, 48, 24? (a) 66 (b) 57 (c) 48 (d) 24

Answer key

  1. 81
  2. 6
  3. 81
  4. 20
  5. 81
  6. 60
  7. 9
  8. 12
  9. 63
  10. 91
  11. 65
  12. 55
  13. 86
  14. 10
  15. 24
  16. 72
  17. 10
  18. 98
  19. 44
  20. 77
  21. 70
  22. 14
  23. 4
  24. 33
  25. 48
  26. 14
  27. 16
  28. 80
  29. 58
  30. 78
  31. 65
  32. 87
  33. 2
  34. 26
  35. 34
  36. 82
  37. 22
  38. 78
  39. 82
  40. 57

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