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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 364 · 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: 27, 85, 90, 54? (a) 27 (b) 85 (c) 90 (d) 54
  2. 2.Which number is the odd one out: 9, 99, 24, 36? (a) 9 (b) 99 (c) 24 (d) 36
  3. 3.Which number is the odd one out: 67, 37, 50, 2? (a) 67 (b) 37 (c) 50 (d) 2
  4. 4.Which number is the odd one out: 83, 9, 13, 73? (a) 83 (b) 9 (c) 13 (d) 73
  5. 5.Which number is the odd one out: 27, 41, 97, 72? (a) 27 (b) 41 (c) 97 (d) 72
  6. 6.Which number is the odd one out: 39, 43, 37, 19? (a) 39 (b) 43 (c) 37 (d) 19
  7. 7.Which number is the odd one out: 55, 19, 71, 47? (a) 55 (b) 19 (c) 71 (d) 47
  8. 8.Which number is the odd one out: 92, 8, 96, 66? (a) 92 (b) 8 (c) 96 (d) 66
  9. 9.Which number is the odd one out: 2, 11, 73, 22? (a) 2 (b) 11 (c) 73 (d) 22
  10. 10.Which number is the odd one out: 44, 8, 64, 16? (a) 44 (b) 8 (c) 64 (d) 16
  11. 11.Which number is the odd one out: 71, 19, 81, 41? (a) 71 (b) 19 (c) 81 (d) 41
  12. 12.Which number is the odd one out: 97, 42, 31, 89? (a) 97 (b) 42 (c) 31 (d) 89
  13. 13.Which number is the odd one out: 37, 9, 27, 81? (a) 37 (b) 9 (c) 27 (d) 81
  14. 14.Which number is the odd one out: 96, 3, 59, 17? (a) 96 (b) 3 (c) 59 (d) 17
  15. 15.Which number is the odd one out: 92, 8, 88, 61? (a) 92 (b) 8 (c) 88 (d) 61
  16. 16.Which number is the odd one out: 78, 33, 97, 17? (a) 78 (b) 33 (c) 97 (d) 17
  17. 17.Which number is the odd one out: 85, 35, 22, 70? (a) 85 (b) 35 (c) 22 (d) 70
  18. 18.Which number is the odd one out: 67, 18, 73, 41? (a) 67 (b) 18 (c) 73 (d) 41
  19. 19.Which number is the odd one out: 99, 71, 17, 13? (a) 99 (b) 71 (c) 17 (d) 13
  20. 20.Which number is the odd one out: 80, 11, 37, 31? (a) 80 (b) 11 (c) 37 (d) 31
  21. 21.Which number is the odd one out: 59, 79, 10, 47? (a) 59 (b) 79 (c) 10 (d) 47
  22. 22.Which number is the odd one out: 30, 31, 19, 97? (a) 30 (b) 31 (c) 19 (d) 97
  23. 23.Which number is the odd one out: 8, 25, 48, 24? (a) 8 (b) 25 (c) 48 (d) 24
  24. 24.Which number is the odd one out: 73, 97, 11, 88? (a) 73 (b) 97 (c) 11 (d) 88
  25. 25.Which number is the odd one out: 11, 30, 17, 73? (a) 11 (b) 30 (c) 17 (d) 73
  26. 26.Which number is the odd one out: 71, 67, 66, 37? (a) 71 (b) 67 (c) 66 (d) 37
  27. 27.Which number is the odd one out: 71, 37, 85, 29? (a) 71 (b) 37 (c) 85 (d) 29
  28. 28.Which number is the odd one out: 18, 54, 3, 27? (a) 18 (b) 54 (c) 3 (d) 27
  29. 29.Which number is the odd one out: 9, 40, 81, 4? (a) 9 (b) 40 (c) 81 (d) 4
  30. 30.Which number is the odd one out: 50, 11, 13, 2? (a) 50 (b) 11 (c) 13 (d) 2
  31. 31.Which number is the odd one out: 42, 89, 83, 59? (a) 42 (b) 89 (c) 83 (d) 59
  32. 32.Which number is the odd one out: 99, 83, 61, 71? (a) 99 (b) 83 (c) 61 (d) 71
  33. 33.Which number is the odd one out: 37, 27, 13, 73? (a) 37 (b) 27 (c) 13 (d) 73
  34. 34.Which number is the odd one out: 37, 11, 13, 52? (a) 37 (b) 11 (c) 13 (d) 52
  35. 35.Which number is the odd one out: 26, 89, 61, 79? (a) 26 (b) 89 (c) 61 (d) 79
  36. 36.Which number is the odd one out: 21, 77, 14, 60? (a) 21 (b) 77 (c) 14 (d) 60
  37. 37.Which number is the odd one out: 37, 94, 97, 23? (a) 37 (b) 94 (c) 97 (d) 23
  38. 38.Which number is the odd one out: 29, 37, 31, 34? (a) 29 (b) 37 (c) 31 (d) 34
  39. 39.Which number is the odd one out: 25, 22, 24, 48? (a) 25 (b) 22 (c) 24 (d) 48
  40. 40.Which number is the odd one out: 72, 97, 31, 53? (a) 72 (b) 97 (c) 31 (d) 53

Answer key

  1. 85
  2. 24
  3. 50
  4. 9
  5. 72
  6. 39
  7. 55
  8. 66
  9. 22
  10. 44
  11. 81
  12. 42
  13. 37
  14. 96
  15. 61
  16. 78
  17. 22
  18. 18
  19. 99
  20. 80
  21. 10
  22. 30
  23. 25
  24. 88
  25. 30
  26. 66
  27. 85
  28. 3
  29. 40
  30. 50
  31. 42
  32. 99
  33. 27
  34. 52
  35. 26
  36. 60
  37. 94
  38. 34
  39. 25
  40. 72

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