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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 276 · 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: 50, 18, 75, 65? (a) 50 (b) 18 (c) 75 (d) 65
  2. 2.Which number is the odd one out: 3, 27, 31, 59? (a) 3 (b) 27 (c) 31 (d) 59
  3. 3.Which number is the odd one out: 41, 17, 19, 45? (a) 41 (b) 17 (c) 19 (d) 45
  4. 4.Which number is the odd one out: 96, 11, 31, 67? (a) 96 (b) 11 (c) 31 (d) 67
  5. 5.Which number is the odd one out: 30, 28, 60, 78? (a) 30 (b) 28 (c) 60 (d) 78
  6. 6.Which number is the odd one out: 61, 47, 44, 17? (a) 61 (b) 47 (c) 44 (d) 17
  7. 7.Which number is the odd one out: 97, 53, 11, 64? (a) 97 (b) 53 (c) 11 (d) 64
  8. 8.Which number is the odd one out: 51, 82, 15, 75? (a) 51 (b) 82 (c) 15 (d) 75
  9. 9.Which number is the odd one out: 66, 73, 43, 61? (a) 66 (b) 73 (c) 43 (d) 61
  10. 10.Which number is the odd one out: 90, 48, 96, 72? (a) 90 (b) 48 (c) 96 (d) 72
  11. 11.Which number is the odd one out: 9, 65, 81, 25? (a) 9 (b) 65 (c) 81 (d) 25
  12. 12.Which number is the odd one out: 71, 97, 33, 89? (a) 71 (b) 97 (c) 33 (d) 89
  13. 13.Which number is the odd one out: 37, 59, 17, 4? (a) 37 (b) 59 (c) 17 (d) 4
  14. 14.Which number is the odd one out: 60, 29, 23, 89? (a) 60 (b) 29 (c) 23 (d) 89
  15. 15.Which number is the odd one out: 73, 47, 15, 71? (a) 73 (b) 47 (c) 15 (d) 71
  16. 16.Which number is the odd one out: 71, 23, 82, 59? (a) 71 (b) 23 (c) 82 (d) 59
  17. 17.Which number is the odd one out: 57, 35, 87, 33? (a) 57 (b) 35 (c) 87 (d) 33
  18. 18.Which number is the odd one out: 66, 23, 73, 83? (a) 66 (b) 23 (c) 73 (d) 83
  19. 19.Which number is the odd one out: 97, 50, 17, 37? (a) 97 (b) 50 (c) 17 (d) 37
  20. 20.Which number is the odd one out: 96, 64, 24, 25? (a) 96 (b) 64 (c) 24 (d) 25
  21. 21.Which number is the odd one out: 25, 17, 61, 71? (a) 25 (b) 17 (c) 61 (d) 71
  22. 22.Which number is the odd one out: 30, 20, 84, 42? (a) 30 (b) 20 (c) 84 (d) 42
  23. 23.Which number is the odd one out: 54, 29, 18, 27? (a) 54 (b) 29 (c) 18 (d) 27
  24. 24.Which number is the odd one out: 41, 12, 11, 13? (a) 41 (b) 12 (c) 11 (d) 13
  25. 25.Which number is the odd one out: 89, 73, 67, 70? (a) 89 (b) 73 (c) 67 (d) 70
  26. 26.Which number is the odd one out: 71, 77, 83, 97? (a) 71 (b) 77 (c) 83 (d) 97
  27. 27.Which number is the odd one out: 3, 87, 31, 73? (a) 3 (b) 87 (c) 31 (d) 73
  28. 28.Which number is the odd one out: 61, 11, 76, 71? (a) 61 (b) 11 (c) 76 (d) 71
  29. 29.Which number is the odd one out: 61, 40, 80, 34? (a) 61 (b) 40 (c) 80 (d) 34
  30. 30.Which number is the odd one out: 18, 49, 66, 54? (a) 18 (b) 49 (c) 66 (d) 54
  31. 31.Which number is the odd one out: 67, 85, 95, 55? (a) 67 (b) 85 (c) 95 (d) 55
  32. 32.Which number is the odd one out: 64, 34, 4, 16? (a) 64 (b) 34 (c) 4 (d) 16
  33. 33.Which number is the odd one out: 5, 85, 75, 3? (a) 5 (b) 85 (c) 75 (d) 3
  34. 34.Which number is the odd one out: 53, 79, 30, 71? (a) 53 (b) 79 (c) 30 (d) 71
  35. 35.Which number is the odd one out: 97, 13, 78, 83? (a) 97 (b) 13 (c) 78 (d) 83
  36. 36.Which number is the odd one out: 80, 53, 43, 23? (a) 80 (b) 53 (c) 43 (d) 23
  37. 37.Which number is the odd one out: 26, 8, 32, 68? (a) 26 (b) 8 (c) 32 (d) 68
  38. 38.Which number is the odd one out: 16, 37, 11, 41? (a) 16 (b) 37 (c) 11 (d) 41
  39. 39.Which number is the odd one out: 8, 32, 89, 88? (a) 8 (b) 32 (c) 89 (d) 88
  40. 40.Which number is the odd one out: 59, 61, 4, 17? (a) 59 (b) 61 (c) 4 (d) 17

Answer key

  1. 18
  2. 27
  3. 45
  4. 96
  5. 28
  6. 44
  7. 64
  8. 82
  9. 66
  10. 90
  11. 65
  12. 33
  13. 4
  14. 60
  15. 15
  16. 82
  17. 35
  18. 66
  19. 50
  20. 25
  21. 25
  22. 20
  23. 29
  24. 12
  25. 70
  26. 77
  27. 87
  28. 76
  29. 61
  30. 49
  31. 67
  32. 34
  33. 3
  34. 30
  35. 78
  36. 80
  37. 26
  38. 16
  39. 89
  40. 4

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