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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 447 · 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: 9, 73, 29, 71? (a) 9 (b) 73 (c) 29 (d) 71
  2. 2.Which number is the odd one out: 28, 20, 90, 84? (a) 28 (b) 20 (c) 90 (d) 84
  3. 3.Which number is the odd one out: 81, 3, 59, 97? (a) 81 (b) 3 (c) 59 (d) 97
  4. 4.Which number is the odd one out: 48, 24, 96, 28? (a) 48 (b) 24 (c) 96 (d) 28
  5. 5.Which number is the odd one out: 89, 23, 88, 47? (a) 89 (b) 23 (c) 88 (d) 47
  6. 6.Which number is the odd one out: 97, 29, 86, 61? (a) 97 (b) 29 (c) 86 (d) 61
  7. 7.Which number is the odd one out: 30, 6, 73, 75? (a) 30 (b) 6 (c) 73 (d) 75
  8. 8.Which number is the odd one out: 72, 29, 71, 83? (a) 72 (b) 29 (c) 71 (d) 83
  9. 9.Which number is the odd one out: 59, 65, 19, 20? (a) 59 (b) 65 (c) 19 (d) 20
  10. 10.Which number is the odd one out: 20, 47, 29, 19? (a) 20 (b) 47 (c) 29 (d) 19
  11. 11.Which number is the odd one out: 29, 46, 94, 38? (a) 29 (b) 46 (c) 94 (d) 38
  12. 12.Which number is the odd one out: 99, 9, 29, 81? (a) 99 (b) 9 (c) 29 (d) 81
  13. 13.Which number is the odd one out: 11, 23, 5, 60? (a) 11 (b) 23 (c) 5 (d) 60
  14. 14.Which number is the odd one out: 25, 9, 55, 81? (a) 25 (b) 9 (c) 55 (d) 81
  15. 15.Which number is the odd one out: 2, 40, 61, 71? (a) 2 (b) 40 (c) 61 (d) 71
  16. 16.Which number is the odd one out: 43, 83, 2, 24? (a) 43 (b) 83 (c) 2 (d) 24
  17. 17.Which number is the odd one out: 61, 53, 25, 5? (a) 61 (b) 53 (c) 25 (d) 5
  18. 18.Which number is the odd one out: 26, 19, 29, 97? (a) 26 (b) 19 (c) 29 (d) 97
  19. 19.Which number is the odd one out: 41, 7, 42, 73? (a) 41 (b) 7 (c) 42 (d) 73
  20. 20.Which number is the odd one out: 64, 16, 4, 5? (a) 64 (b) 16 (c) 4 (d) 5
  21. 21.Which number is the odd one out: 29, 17, 14, 67? (a) 29 (b) 17 (c) 14 (d) 67
  22. 22.Which number is the odd one out: 22, 53, 79, 19? (a) 22 (b) 53 (c) 79 (d) 19
  23. 23.Which number is the odd one out: 22, 48, 24, 12? (a) 22 (b) 48 (c) 24 (d) 12
  24. 24.Which number is the odd one out: 64, 41, 13, 71? (a) 64 (b) 41 (c) 13 (d) 71
  25. 25.Which number is the odd one out: 84, 97, 37, 83? (a) 84 (b) 97 (c) 37 (d) 83
  26. 26.Which number is the odd one out: 53, 41, 97, 86? (a) 53 (b) 41 (c) 97 (d) 86
  27. 27.Which number is the odd one out: 16, 88, 64, 89? (a) 16 (b) 88 (c) 64 (d) 89
  28. 28.Which number is the odd one out: 19, 17, 96, 31? (a) 19 (b) 17 (c) 96 (d) 31
  29. 29.Which number is the odd one out: 24, 85, 55, 95? (a) 24 (b) 85 (c) 55 (d) 95
  30. 30.Which number is the odd one out: 99, 67, 59, 54? (a) 99 (b) 67 (c) 59 (d) 54
  31. 31.Which number is the odd one out: 67, 83, 48, 29? (a) 67 (b) 83 (c) 48 (d) 29
  32. 32.Which number is the odd one out: 83, 71, 90, 69? (a) 83 (b) 71 (c) 90 (d) 69
  33. 33.Which number is the odd one out: 47, 70, 83, 61? (a) 47 (b) 70 (c) 83 (d) 61
  34. 34.Which number is the odd one out: 62, 61, 53, 67? (a) 62 (b) 61 (c) 53 (d) 67
  35. 35.Which number is the odd one out: 80, 32, 22, 40? (a) 80 (b) 32 (c) 22 (d) 40
  36. 36.Which number is the odd one out: 73, 95, 17, 13? (a) 73 (b) 95 (c) 17 (d) 13
  37. 37.Which number is the odd one out: 54, 66, 90, 40? (a) 54 (b) 66 (c) 90 (d) 40
  38. 38.Which number is the odd one out: 35, 70, 91, 94? (a) 35 (b) 70 (c) 91 (d) 94
  39. 39.Which number is the odd one out: 23, 41, 53, 75? (a) 23 (b) 41 (c) 53 (d) 75
  40. 40.Which number is the odd one out: 35, 4, 91, 70? (a) 35 (b) 4 (c) 91 (d) 70

Answer key

  1. 9
  2. 90
  3. 81
  4. 28
  5. 88
  6. 86
  7. 73
  8. 72
  9. 20
  10. 20
  11. 29
  12. 29
  13. 60
  14. 55
  15. 40
  16. 24
  17. 25
  18. 26
  19. 42
  20. 5
  21. 14
  22. 22
  23. 22
  24. 64
  25. 84
  26. 86
  27. 89
  28. 96
  29. 24
  30. 54
  31. 48
  32. 90
  33. 70
  34. 62
  35. 22
  36. 95
  37. 40
  38. 94
  39. 75
  40. 4

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