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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 407 · 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: 31, 64, 41, 97? (a) 31 (b) 64 (c) 41 (d) 97
  2. 2.Which number is the odd one out: 65, 40, 8, 88? (a) 65 (b) 40 (c) 8 (d) 88
  3. 3.Which number is the odd one out: 76, 2, 44, 23? (a) 76 (b) 2 (c) 44 (d) 23
  4. 4.Which number is the odd one out: 23, 29, 8, 83? (a) 23 (b) 29 (c) 8 (d) 83
  5. 5.Which number is the odd one out: 59, 68, 47, 19? (a) 59 (b) 68 (c) 47 (d) 19
  6. 6.Which number is the odd one out: 23, 41, 7, 84? (a) 23 (b) 41 (c) 7 (d) 84
  7. 7.Which number is the odd one out: 73, 47, 83, 92? (a) 73 (b) 47 (c) 83 (d) 92
  8. 8.Which number is the odd one out: 31, 8, 43, 67? (a) 31 (b) 8 (c) 43 (d) 67
  9. 9.Which number is the odd one out: 11, 30, 41, 53? (a) 11 (b) 30 (c) 41 (d) 53
  10. 10.Which number is the odd one out: 13, 59, 8, 73? (a) 13 (b) 59 (c) 8 (d) 73
  11. 11.Which number is the odd one out: 72, 20, 55, 95? (a) 72 (b) 20 (c) 55 (d) 95
  12. 12.Which number is the odd one out: 20, 10, 50, 48? (a) 20 (b) 10 (c) 50 (d) 48
  13. 13.Which number is the odd one out: 14, 11, 77, 73? (a) 14 (b) 11 (c) 77 (d) 73
  14. 14.Which number is the odd one out: 17, 73, 28, 37? (a) 17 (b) 73 (c) 28 (d) 37
  15. 15.Which number is the odd one out: 16, 64, 7, 49? (a) 16 (b) 64 (c) 7 (d) 49
  16. 16.Which number is the odd one out: 77, 7, 79, 53? (a) 77 (b) 7 (c) 79 (d) 53
  17. 17.Which number is the odd one out: 28, 20, 77, 50? (a) 28 (b) 20 (c) 77 (d) 50
  18. 18.Which number is the odd one out: 28, 2, 83, 37? (a) 28 (b) 2 (c) 83 (d) 37
  19. 19.Which number is the odd one out: 31, 61, 19, 49? (a) 31 (b) 61 (c) 19 (d) 49
  20. 20.Which number is the odd one out: 73, 67, 19, 65? (a) 73 (b) 67 (c) 19 (d) 65
  21. 21.Which number is the odd one out: 19, 34, 79, 43? (a) 19 (b) 34 (c) 79 (d) 43
  22. 22.Which number is the odd one out: 25, 48, 54, 72? (a) 25 (b) 48 (c) 54 (d) 72
  23. 23.Which number is the odd one out: 9, 95, 75, 65? (a) 9 (b) 95 (c) 75 (d) 65
  24. 24.Which number is the odd one out: 83, 23, 18, 37? (a) 83 (b) 23 (c) 18 (d) 37
  25. 25.Which number is the odd one out: 96, 72, 81, 9? (a) 96 (b) 72 (c) 81 (d) 9
  26. 26.Which number is the odd one out: 59, 47, 97, 77? (a) 59 (b) 47 (c) 97 (d) 77
  27. 27.Which number is the odd one out: 73, 83, 28, 59? (a) 73 (b) 83 (c) 28 (d) 59
  28. 28.Which number is the odd one out: 17, 19, 78, 11? (a) 17 (b) 19 (c) 78 (d) 11
  29. 29.Which number is the odd one out: 11, 89, 84, 71? (a) 11 (b) 89 (c) 84 (d) 71
  30. 30.Which number is the odd one out: 83, 89, 34, 23? (a) 83 (b) 89 (c) 34 (d) 23
  31. 31.Which number is the odd one out: 67, 58, 31, 83? (a) 67 (b) 58 (c) 31 (d) 83
  32. 32.Which number is the odd one out: 9, 24, 81, 54? (a) 9 (b) 24 (c) 81 (d) 54
  33. 33.Which number is the odd one out: 96, 88, 24, 97? (a) 96 (b) 88 (c) 24 (d) 97
  34. 34.Which number is the odd one out: 56, 77, 8, 88? (a) 56 (b) 77 (c) 8 (d) 88
  35. 35.Which number is the odd one out: 17, 43, 86, 67? (a) 17 (b) 43 (c) 86 (d) 67
  36. 36.Which number is the odd one out: 89, 13, 17, 72? (a) 89 (b) 13 (c) 17 (d) 72
  37. 37.Which number is the odd one out: 70, 48, 15, 35? (a) 70 (b) 48 (c) 15 (d) 35
  38. 38.Which number is the odd one out: 95, 68, 8, 88? (a) 95 (b) 68 (c) 8 (d) 88
  39. 39.Which number is the odd one out: 20, 31, 40, 80? (a) 20 (b) 31 (c) 40 (d) 80
  40. 40.Which number is the odd one out: 3, 99, 71, 41? (a) 3 (b) 99 (c) 71 (d) 41

Answer key

  1. 64
  2. 65
  3. 23
  4. 8
  5. 68
  6. 84
  7. 92
  8. 8
  9. 30
  10. 8
  11. 72
  12. 48
  13. 14
  14. 28
  15. 7
  16. 77
  17. 77
  18. 28
  19. 49
  20. 65
  21. 34
  22. 25
  23. 9
  24. 18
  25. 96
  26. 77
  27. 28
  28. 78
  29. 84
  30. 34
  31. 58
  32. 24
  33. 97
  34. 77
  35. 86
  36. 72
  37. 48
  38. 95
  39. 31
  40. 99

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