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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 267 · 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: 25, 81, 80, 9? (a) 25 (b) 81 (c) 80 (d) 9
  2. 2.Which number is the odd one out: 71, 95, 41, 17? (a) 71 (b) 95 (c) 41 (d) 17
  3. 3.Which number is the odd one out: 23, 19, 79, 64? (a) 23 (b) 19 (c) 79 (d) 64
  4. 4.Which number is the odd one out: 35, 59, 79, 89? (a) 35 (b) 59 (c) 79 (d) 89
  5. 5.Which number is the odd one out: 28, 56, 31, 8? (a) 28 (b) 56 (c) 31 (d) 8
  6. 6.Which number is the odd one out: 81, 9, 25, 95? (a) 81 (b) 9 (c) 25 (d) 95
  7. 7.Which number is the odd one out: 11, 92, 47, 67? (a) 11 (b) 92 (c) 47 (d) 67
  8. 8.Which number is the odd one out: 8, 88, 40, 30? (a) 8 (b) 88 (c) 40 (d) 30
  9. 9.Which number is the odd one out: 23, 8, 59, 79? (a) 23 (b) 8 (c) 59 (d) 79
  10. 10.Which number is the odd one out: 43, 71, 2, 72? (a) 43 (b) 71 (c) 2 (d) 72
  11. 11.Which number is the odd one out: 59, 43, 73, 20? (a) 59 (b) 43 (c) 73 (d) 20
  12. 12.Which number is the odd one out: 89, 41, 37, 91? (a) 89 (b) 41 (c) 37 (d) 91
  13. 13.Which number is the odd one out: 97, 14, 47, 31? (a) 97 (b) 14 (c) 47 (d) 31
  14. 14.Which number is the odd one out: 99, 35, 18, 90? (a) 99 (b) 35 (c) 18 (d) 90
  15. 15.Which number is the odd one out: 20, 67, 71, 2? (a) 20 (b) 67 (c) 71 (d) 2
  16. 16.Which number is the odd one out: 29, 59, 64, 97? (a) 29 (b) 59 (c) 64 (d) 97
  17. 17.Which number is the odd one out: 21, 83, 59, 13? (a) 21 (b) 83 (c) 59 (d) 13
  18. 18.Which number is the odd one out: 19, 95, 5, 17? (a) 19 (b) 95 (c) 5 (d) 17
  19. 19.Which number is the odd one out: 90, 83, 17, 11? (a) 90 (b) 83 (c) 17 (d) 11
  20. 20.Which number is the odd one out: 84, 77, 91, 96? (a) 84 (b) 77 (c) 91 (d) 96
  21. 21.Which number is the odd one out: 32, 76, 8, 78? (a) 32 (b) 76 (c) 8 (d) 78
  22. 22.Which number is the odd one out: 59, 18, 23, 61? (a) 59 (b) 18 (c) 23 (d) 61
  23. 23.Which number is the odd one out: 10, 50, 34, 77? (a) 10 (b) 50 (c) 34 (d) 77
  24. 24.Which number is the odd one out: 53, 59, 57, 23? (a) 53 (b) 59 (c) 57 (d) 23
  25. 25.Which number is the odd one out: 31, 73, 77, 67? (a) 31 (b) 73 (c) 77 (d) 67
  26. 26.Which number is the odd one out: 67, 65, 90, 73? (a) 67 (b) 65 (c) 90 (d) 73
  27. 27.Which number is the odd one out: 83, 59, 17, 90? (a) 83 (b) 59 (c) 17 (d) 90
  28. 28.Which number is the odd one out: 19, 41, 59, 93? (a) 19 (b) 41 (c) 59 (d) 93
  29. 29.Which number is the odd one out: 31, 67, 87, 37? (a) 31 (b) 67 (c) 87 (d) 37
  30. 30.Which number is the odd one out: 29, 2, 38, 23? (a) 29 (b) 2 (c) 38 (d) 23
  31. 31.Which number is the odd one out: 85, 19, 41, 13? (a) 85 (b) 19 (c) 41 (d) 13
  32. 32.Which number is the odd one out: 34, 95, 10, 62? (a) 34 (b) 95 (c) 10 (d) 62
  33. 33.Which number is the odd one out: 8, 4, 16, 59? (a) 8 (b) 4 (c) 16 (d) 59
  34. 34.Which number is the odd one out: 37, 25, 31, 67? (a) 37 (b) 25 (c) 31 (d) 67
  35. 35.Which number is the odd one out: 53, 2, 46, 11? (a) 53 (b) 2 (c) 46 (d) 11
  36. 36.Which number is the odd one out: 13, 37, 64, 83? (a) 13 (b) 37 (c) 64 (d) 83
  37. 37.Which number is the odd one out: 54, 37, 3, 11? (a) 54 (b) 37 (c) 3 (d) 11
  38. 38.Which number is the odd one out: 59, 32, 23, 73? (a) 59 (b) 32 (c) 23 (d) 73
  39. 39.Which number is the odd one out: 20, 45, 72, 95? (a) 20 (b) 45 (c) 72 (d) 95
  40. 40.Which number is the odd one out: 45, 33, 54, 90? (a) 45 (b) 33 (c) 54 (d) 90

Answer key

  1. 80
  2. 95
  3. 64
  4. 35
  5. 31
  6. 95
  7. 92
  8. 30
  9. 8
  10. 72
  11. 20
  12. 91
  13. 14
  14. 35
  15. 20
  16. 64
  17. 21
  18. 95
  19. 90
  20. 96
  21. 78
  22. 18
  23. 77
  24. 57
  25. 77
  26. 90
  27. 90
  28. 93
  29. 87
  30. 38
  31. 85
  32. 95
  33. 59
  34. 25
  35. 46
  36. 64
  37. 54
  38. 32
  39. 72
  40. 33

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