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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 149 · 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, 97, 9, 53? (a) 73 (b) 97 (c) 9 (d) 53
  2. 2.Which number is the odd one out: 78, 99, 29, 18? (a) 78 (b) 99 (c) 29 (d) 18
  3. 3.Which number is the odd one out: 3, 29, 43, 54? (a) 3 (b) 29 (c) 43 (d) 54
  4. 4.Which number is the odd one out: 77, 47, 83, 19? (a) 77 (b) 47 (c) 83 (d) 19
  5. 5.Which number is the odd one out: 53, 89, 56, 2? (a) 53 (b) 89 (c) 56 (d) 2
  6. 6.Which number is the odd one out: 27, 45, 76, 15? (a) 27 (b) 45 (c) 76 (d) 15
  7. 7.Which number is the odd one out: 77, 47, 31, 97? (a) 77 (b) 47 (c) 31 (d) 97
  8. 8.Which number is the odd one out: 94, 22, 34, 77? (a) 94 (b) 22 (c) 34 (d) 77
  9. 9.Which number is the odd one out: 87, 47, 13, 11? (a) 87 (b) 47 (c) 13 (d) 11
  10. 10.Which number is the odd one out: 24, 94, 48, 44? (a) 24 (b) 94 (c) 48 (d) 44
  11. 11.Which number is the odd one out: 53, 12, 83, 11? (a) 53 (b) 12 (c) 83 (d) 11
  12. 12.Which number is the odd one out: 89, 47, 37, 26? (a) 89 (b) 47 (c) 37 (d) 26
  13. 13.Which number is the odd one out: 30, 2, 23, 67? (a) 30 (b) 2 (c) 23 (d) 67
  14. 14.Which number is the odd one out: 70, 68, 91, 35? (a) 70 (b) 68 (c) 91 (d) 35
  15. 15.Which number is the odd one out: 19, 81, 71, 23? (a) 19 (b) 81 (c) 71 (d) 23
  16. 16.Which number is the odd one out: 13, 90, 17, 3? (a) 13 (b) 90 (c) 17 (d) 3
  17. 17.Which number is the odd one out: 17, 27, 13, 31? (a) 17 (b) 27 (c) 13 (d) 31
  18. 18.Which number is the odd one out: 47, 85, 73, 37? (a) 47 (b) 85 (c) 73 (d) 37
  19. 19.Which number is the odd one out: 21, 40, 80, 52? (a) 21 (b) 40 (c) 80 (d) 52
  20. 20.Which number is the odd one out: 8, 32, 42, 88? (a) 8 (b) 32 (c) 42 (d) 88
  21. 21.Which number is the odd one out: 17, 23, 74, 47? (a) 17 (b) 23 (c) 74 (d) 47
  22. 22.Which number is the odd one out: 67, 11, 73, 20? (a) 67 (b) 11 (c) 73 (d) 20
  23. 23.Which number is the odd one out: 53, 31, 49, 97? (a) 53 (b) 31 (c) 49 (d) 97
  24. 24.Which number is the odd one out: 47, 50, 17, 89? (a) 47 (b) 50 (c) 17 (d) 89
  25. 25.Which number is the odd one out: 39, 29, 13, 83? (a) 39 (b) 29 (c) 13 (d) 83
  26. 26.Which number is the odd one out: 59, 89, 31, 69? (a) 59 (b) 89 (c) 31 (d) 69
  27. 27.Which number is the odd one out: 61, 19, 97, 18? (a) 61 (b) 19 (c) 97 (d) 18
  28. 28.Which number is the odd one out: 17, 16, 36, 72? (a) 17 (b) 16 (c) 36 (d) 72
  29. 29.Which number is the odd one out: 2, 28, 53, 43? (a) 2 (b) 28 (c) 53 (d) 43
  30. 30.Which number is the odd one out: 52, 41, 13, 73? (a) 52 (b) 41 (c) 13 (d) 73
  31. 31.Which number is the odd one out: 47, 13, 25, 41? (a) 47 (b) 13 (c) 25 (d) 41
  32. 32.Which number is the odd one out: 8, 88, 38, 25? (a) 8 (b) 88 (c) 38 (d) 25
  33. 33.Which number is the odd one out: 97, 43, 35, 23? (a) 97 (b) 43 (c) 35 (d) 23
  34. 34.Which number is the odd one out: 71, 22, 47, 11? (a) 71 (b) 22 (c) 47 (d) 11
  35. 35.Which number is the odd one out: 32, 12, 88, 8? (a) 32 (b) 12 (c) 88 (d) 8
  36. 36.Which number is the odd one out: 89, 5, 18, 95? (a) 89 (b) 5 (c) 18 (d) 95
  37. 37.Which number is the odd one out: 31, 89, 50, 43? (a) 31 (b) 89 (c) 50 (d) 43
  38. 38.Which number is the odd one out: 8, 89, 24, 96? (a) 8 (b) 89 (c) 24 (d) 96
  39. 39.Which number is the odd one out: 31, 2, 61, 92? (a) 31 (b) 2 (c) 61 (d) 92
  40. 40.Which number is the odd one out: 51, 29, 53, 61? (a) 51 (b) 29 (c) 53 (d) 61

Answer key

  1. 9
  2. 29
  3. 54
  4. 77
  5. 56
  6. 76
  7. 77
  8. 77
  9. 87
  10. 94
  11. 12
  12. 26
  13. 30
  14. 68
  15. 81
  16. 90
  17. 27
  18. 85
  19. 21
  20. 42
  21. 74
  22. 20
  23. 49
  24. 50
  25. 39
  26. 69
  27. 18
  28. 17
  29. 28
  30. 52
  31. 25
  32. 25
  33. 35
  34. 22
  35. 12
  36. 18
  37. 50
  38. 89
  39. 92
  40. 51

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