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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 610 · 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: 23, 11, 80, 73? (a) 23 (b) 11 (c) 80 (d) 73
  2. 2.Which number is the odd one out: 64, 11, 19, 67? (a) 64 (b) 11 (c) 19 (d) 67
  3. 3.Which number is the odd one out: 71, 44, 19, 13? (a) 71 (b) 44 (c) 19 (d) 13
  4. 4.Which number is the odd one out: 80, 21, 10, 40? (a) 80 (b) 21 (c) 10 (d) 40
  5. 5.Which number is the odd one out: 42, 14, 28, 36? (a) 42 (b) 14 (c) 28 (d) 36
  6. 6.Which number is the odd one out: 3, 89, 57, 29? (a) 3 (b) 89 (c) 57 (d) 29
  7. 7.Which number is the odd one out: 13, 87, 29, 67? (a) 13 (b) 87 (c) 29 (d) 67
  8. 8.Which number is the odd one out: 35, 32, 70, 91? (a) 35 (b) 32 (c) 70 (d) 91
  9. 9.Which number is the odd one out: 81, 9, 88, 99? (a) 81 (b) 9 (c) 88 (d) 99
  10. 10.Which number is the odd one out: 59, 47, 67, 39? (a) 59 (b) 47 (c) 67 (d) 39
  11. 11.Which number is the odd one out: 66, 78, 6, 97? (a) 66 (b) 78 (c) 6 (d) 97
  12. 12.Which number is the odd one out: 52, 59, 89, 37? (a) 52 (b) 59 (c) 89 (d) 37
  13. 13.Which number is the odd one out: 76, 52, 3, 44? (a) 76 (b) 52 (c) 3 (d) 44
  14. 14.Which number is the odd one out: 3, 61, 51, 41? (a) 3 (b) 61 (c) 51 (d) 41
  15. 15.Which number is the odd one out: 29, 2, 40, 59? (a) 29 (b) 2 (c) 40 (d) 59
  16. 16.Which number is the odd one out: 11, 74, 61, 37? (a) 11 (b) 74 (c) 61 (d) 37
  17. 17.Which number is the odd one out: 75, 3, 31, 13? (a) 75 (b) 3 (c) 31 (d) 13
  18. 18.Which number is the odd one out: 68, 31, 11, 37? (a) 68 (b) 31 (c) 11 (d) 37
  19. 19.Which number is the odd one out: 40, 80, 49, 88? (a) 40 (b) 80 (c) 49 (d) 88
  20. 20.Which number is the odd one out: 11, 64, 76, 16? (a) 11 (b) 64 (c) 76 (d) 16
  21. 21.Which number is the odd one out: 30, 3, 5, 61? (a) 30 (b) 3 (c) 5 (d) 61
  22. 22.Which number is the odd one out: 20, 83, 73, 11? (a) 20 (b) 83 (c) 73 (d) 11
  23. 23.Which number is the odd one out: 10, 23, 5, 17? (a) 10 (b) 23 (c) 5 (d) 17
  24. 24.Which number is the odd one out: 54, 77, 21, 91? (a) 54 (b) 77 (c) 21 (d) 91
  25. 25.Which number is the odd one out: 84, 66, 28, 76? (a) 84 (b) 66 (c) 28 (d) 76
  26. 26.Which number is the odd one out: 38, 71, 41, 83? (a) 38 (b) 71 (c) 41 (d) 83
  27. 27.Which number is the odd one out: 59, 51, 71, 41? (a) 59 (b) 51 (c) 71 (d) 41
  28. 28.Which number is the odd one out: 27, 93, 14, 63? (a) 27 (b) 93 (c) 14 (d) 63
  29. 29.Which number is the odd one out: 73, 13, 37, 16? (a) 73 (b) 13 (c) 37 (d) 16
  30. 30.Which number is the odd one out: 10, 47, 73, 61? (a) 10 (b) 47 (c) 73 (d) 61
  31. 31.Which number is the odd one out: 90, 32, 40, 48? (a) 90 (b) 32 (c) 40 (d) 48
  32. 32.Which number is the odd one out: 11, 80, 2, 97? (a) 11 (b) 80 (c) 2 (d) 97
  33. 33.Which number is the odd one out: 64, 11, 47, 97? (a) 64 (b) 11 (c) 47 (d) 97
  34. 34.Which number is the odd one out: 54, 75, 18, 27? (a) 54 (b) 75 (c) 18 (d) 27
  35. 35.Which number is the odd one out: 11, 2, 67, 50? (a) 11 (b) 2 (c) 67 (d) 50
  36. 36.Which number is the odd one out: 31, 37, 94, 29? (a) 31 (b) 37 (c) 94 (d) 29
  37. 37.Which number is the odd one out: 69, 46, 32, 8? (a) 69 (b) 46 (c) 32 (d) 8
  38. 38.Which number is the odd one out: 61, 37, 42, 83? (a) 61 (b) 37 (c) 42 (d) 83
  39. 39.Which number is the odd one out: 82, 67, 23, 43? (a) 82 (b) 67 (c) 23 (d) 43
  40. 40.Which number is the odd one out: 50, 47, 5, 19? (a) 50 (b) 47 (c) 5 (d) 19

Answer key

  1. 80
  2. 64
  3. 44
  4. 21
  5. 36
  6. 57
  7. 87
  8. 32
  9. 88
  10. 39
  11. 97
  12. 52
  13. 3
  14. 51
  15. 40
  16. 74
  17. 75
  18. 68
  19. 49
  20. 11
  21. 30
  22. 20
  23. 10
  24. 54
  25. 66
  26. 38
  27. 51
  28. 14
  29. 16
  30. 10
  31. 90
  32. 80
  33. 64
  34. 75
  35. 50
  36. 94
  37. 69
  38. 42
  39. 82
  40. 50

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