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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 915 · 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: 47, 87, 19, 71? (a) 47 (b) 87 (c) 19 (d) 71
  2. 2.Which number is the odd one out: 91, 39, 18, 54? (a) 91 (b) 39 (c) 18 (d) 54
  3. 3.Which number is the odd one out: 54, 18, 99, 17? (a) 54 (b) 18 (c) 99 (d) 17
  4. 4.Which number is the odd one out: 54, 55, 27, 90? (a) 54 (b) 55 (c) 27 (d) 90
  5. 5.Which number is the odd one out: 53, 23, 48, 17? (a) 53 (b) 23 (c) 48 (d) 17
  6. 6.Which number is the odd one out: 54, 27, 99, 66? (a) 54 (b) 27 (c) 99 (d) 66
  7. 7.Which number is the odd one out: 29, 42, 19, 37? (a) 29 (b) 42 (c) 19 (d) 37
  8. 8.Which number is the odd one out: 40, 80, 56, 7? (a) 40 (b) 80 (c) 56 (d) 7
  9. 9.Which number is the odd one out: 31, 39, 83, 19? (a) 31 (b) 39 (c) 83 (d) 19
  10. 10.Which number is the odd one out: 27, 65, 45, 99? (a) 27 (b) 65 (c) 45 (d) 99
  11. 11.Which number is the odd one out: 99, 3, 9, 81? (a) 99 (b) 3 (c) 9 (d) 81
  12. 12.Which number is the odd one out: 96, 20, 55, 95? (a) 96 (b) 20 (c) 55 (d) 95
  13. 13.Which number is the odd one out: 23, 29, 74, 83? (a) 23 (b) 29 (c) 74 (d) 83
  14. 14.Which number is the odd one out: 17, 47, 83, 81? (a) 17 (b) 47 (c) 83 (d) 81
  15. 15.Which number is the odd one out: 75, 11, 5, 15? (a) 75 (b) 11 (c) 5 (d) 15
  16. 16.Which number is the odd one out: 57, 8, 40, 80? (a) 57 (b) 8 (c) 40 (d) 80
  17. 17.Which number is the odd one out: 97, 57, 67, 47? (a) 97 (b) 57 (c) 67 (d) 47
  18. 18.Which number is the odd one out: 55, 15, 65, 39? (a) 55 (b) 15 (c) 65 (d) 39
  19. 19.Which number is the odd one out: 13, 36, 11, 79? (a) 13 (b) 36 (c) 11 (d) 79
  20. 20.Which number is the odd one out: 2, 26, 74, 11? (a) 2 (b) 26 (c) 74 (d) 11
  21. 21.Which number is the odd one out: 11, 47, 63, 23? (a) 11 (b) 47 (c) 63 (d) 23
  22. 22.Which number is the odd one out: 55, 8, 32, 38? (a) 55 (b) 8 (c) 32 (d) 38
  23. 23.Which number is the odd one out: 72, 85, 20, 45? (a) 72 (b) 85 (c) 20 (d) 45
  24. 24.Which number is the odd one out: 53, 89, 61, 51? (a) 53 (b) 89 (c) 61 (d) 51
  25. 25.Which number is the odd one out: 2, 86, 13, 29? (a) 2 (b) 86 (c) 13 (d) 29
  26. 26.Which number is the odd one out: 24, 96, 32, 11? (a) 24 (b) 96 (c) 32 (d) 11
  27. 27.Which number is the odd one out: 95, 16, 4, 64? (a) 95 (b) 16 (c) 4 (d) 64
  28. 28.Which number is the odd one out: 48, 49, 8, 24? (a) 48 (b) 49 (c) 8 (d) 24
  29. 29.Which number is the odd one out: 31, 41, 25, 11? (a) 31 (b) 41 (c) 25 (d) 11
  30. 30.Which number is the odd one out: 13, 41, 97, 39? (a) 13 (b) 41 (c) 97 (d) 39
  31. 31.Which number is the odd one out: 2, 41, 13, 64? (a) 2 (b) 41 (c) 13 (d) 64
  32. 32.Which number is the odd one out: 73, 79, 61, 40? (a) 73 (b) 79 (c) 61 (d) 40
  33. 33.Which number is the odd one out: 97, 83, 72, 13? (a) 97 (b) 83 (c) 72 (d) 13
  34. 34.Which number is the odd one out: 67, 7, 17, 84? (a) 67 (b) 7 (c) 17 (d) 84
  35. 35.Which number is the odd one out: 67, 9, 23, 53? (a) 67 (b) 9 (c) 23 (d) 53
  36. 36.Which number is the odd one out: 73, 79, 17, 72? (a) 73 (b) 79 (c) 17 (d) 72
  37. 37.Which number is the odd one out: 64, 19, 88, 16? (a) 64 (b) 19 (c) 88 (d) 16
  38. 38.Which number is the odd one out: 5, 73, 68, 65? (a) 5 (b) 73 (c) 68 (d) 65
  39. 39.Which number is the odd one out: 88, 28, 16, 64? (a) 88 (b) 28 (c) 16 (d) 64
  40. 40.Which number is the odd one out: 65, 18, 90, 99? (a) 65 (b) 18 (c) 90 (d) 99

Answer key

  1. 87
  2. 91
  3. 17
  4. 55
  5. 48
  6. 66
  7. 42
  8. 7
  9. 39
  10. 65
  11. 3
  12. 96
  13. 74
  14. 81
  15. 11
  16. 57
  17. 57
  18. 39
  19. 36
  20. 11
  21. 63
  22. 55
  23. 72
  24. 51
  25. 86
  26. 11
  27. 95
  28. 49
  29. 25
  30. 39
  31. 64
  32. 40
  33. 72
  34. 84
  35. 9
  36. 72
  37. 19
  38. 68
  39. 28
  40. 65

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