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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 499 · 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: 73, 3, 83, 27? (a) 73 (b) 3 (c) 83 (d) 27
  2. 2.Which number is the odd one out: 7, 12, 91, 13? (a) 7 (b) 12 (c) 91 (d) 13
  3. 3.Which number is the odd one out: 11, 52, 59, 29? (a) 11 (b) 52 (c) 59 (d) 29
  4. 4.Which number is the odd one out: 31, 71, 43, 10? (a) 31 (b) 71 (c) 43 (d) 10
  5. 5.Which number is the odd one out: 62, 43, 67, 61? (a) 62 (b) 43 (c) 67 (d) 61
  6. 6.Which number is the odd one out: 37, 52, 31, 67? (a) 37 (b) 52 (c) 31 (d) 67
  7. 7.Which number is the odd one out: 89, 46, 17, 79? (a) 89 (b) 46 (c) 17 (d) 79
  8. 8.Which number is the odd one out: 78, 89, 29, 79? (a) 78 (b) 89 (c) 29 (d) 79
  9. 9.Which number is the odd one out: 96, 40, 78, 6? (a) 96 (b) 40 (c) 78 (d) 6
  10. 10.Which number is the odd one out: 45, 18, 90, 7? (a) 45 (b) 18 (c) 90 (d) 7
  11. 11.Which number is the odd one out: 2, 20, 43, 29? (a) 2 (b) 20 (c) 43 (d) 29
  12. 12.Which number is the odd one out: 21, 71, 83, 41? (a) 21 (b) 71 (c) 83 (d) 41
  13. 13.Which number is the odd one out: 19, 53, 64, 13? (a) 19 (b) 53 (c) 64 (d) 13
  14. 14.Which number is the odd one out: 73, 67, 89, 28? (a) 73 (b) 67 (c) 89 (d) 28
  15. 15.Which number is the odd one out: 50, 61, 47, 97? (a) 50 (b) 61 (c) 47 (d) 97
  16. 16.Which number is the odd one out: 83, 17, 5, 45? (a) 83 (b) 17 (c) 5 (d) 45
  17. 17.Which number is the odd one out: 79, 59, 83, 48? (a) 79 (b) 59 (c) 83 (d) 48
  18. 18.Which number is the odd one out: 84, 61, 71, 69? (a) 84 (b) 61 (c) 71 (d) 69
  19. 19.Which number is the odd one out: 66, 8, 88, 48? (a) 66 (b) 8 (c) 88 (d) 48
  20. 20.Which number is the odd one out: 62, 53, 37, 73? (a) 62 (b) 53 (c) 37 (d) 73
  21. 21.Which number is the odd one out: 43, 48, 89, 13? (a) 43 (b) 48 (c) 89 (d) 13
  22. 22.Which number is the odd one out: 17, 47, 61, 62? (a) 17 (b) 47 (c) 61 (d) 62
  23. 23.Which number is the odd one out: 97, 10, 59, 2? (a) 97 (b) 10 (c) 59 (d) 2
  24. 24.Which number is the odd one out: 60, 20, 10, 54? (a) 60 (b) 20 (c) 10 (d) 54
  25. 25.Which number is the odd one out: 75, 66, 15, 30? (a) 75 (b) 66 (c) 15 (d) 30
  26. 26.Which number is the odd one out: 48, 49, 96, 88? (a) 48 (b) 49 (c) 96 (d) 88
  27. 27.Which number is the odd one out: 63, 17, 83, 41? (a) 63 (b) 17 (c) 83 (d) 41
  28. 28.Which number is the odd one out: 11, 90, 67, 71? (a) 11 (b) 90 (c) 67 (d) 71
  29. 29.Which number is the odd one out: 65, 85, 64, 50? (a) 65 (b) 85 (c) 64 (d) 50
  30. 30.Which number is the odd one out: 26, 93, 75, 15? (a) 26 (b) 93 (c) 75 (d) 15
  31. 31.Which number is the odd one out: 41, 99, 18, 54? (a) 41 (b) 99 (c) 18 (d) 54
  32. 32.Which number is the odd one out: 7, 79, 31, 91? (a) 7 (b) 79 (c) 31 (d) 91
  33. 33.Which number is the odd one out: 61, 36, 23, 79? (a) 61 (b) 36 (c) 23 (d) 79
  34. 34.Which number is the odd one out: 43, 6, 29, 67? (a) 43 (b) 6 (c) 29 (d) 67
  35. 35.Which number is the odd one out: 88, 58, 40, 80? (a) 88 (b) 58 (c) 40 (d) 80
  36. 36.Which number is the odd one out: 45, 18, 90, 69? (a) 45 (b) 18 (c) 90 (d) 69
  37. 37.Which number is the odd one out: 53, 17, 5, 50? (a) 53 (b) 17 (c) 5 (d) 50
  38. 38.Which number is the odd one out: 81, 24, 72, 9? (a) 81 (b) 24 (c) 72 (d) 9
  39. 39.Which number is the odd one out: 43, 36, 11, 89? (a) 43 (b) 36 (c) 11 (d) 89
  40. 40.Which number is the odd one out: 4, 89, 2, 37? (a) 4 (b) 89 (c) 2 (d) 37

Answer key

  1. 27
  2. 12
  3. 52
  4. 10
  5. 62
  6. 52
  7. 46
  8. 78
  9. 40
  10. 7
  11. 20
  12. 21
  13. 64
  14. 28
  15. 50
  16. 45
  17. 48
  18. 84
  19. 66
  20. 62
  21. 48
  22. 62
  23. 10
  24. 54
  25. 66
  26. 49
  27. 63
  28. 90
  29. 64
  30. 26
  31. 41
  32. 91
  33. 36
  34. 6
  35. 58
  36. 69
  37. 50
  38. 24
  39. 36
  40. 4

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