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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 866 · 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: 83, 31, 33, 73? (a) 83 (b) 31 (c) 33 (d) 73
  2. 2.Which number is the odd one out: 78, 10, 18, 54? (a) 78 (b) 10 (c) 18 (d) 54
  3. 3.Which number is the odd one out: 79, 13, 5, 20? (a) 79 (b) 13 (c) 5 (d) 20
  4. 4.Which number is the odd one out: 90, 68, 72, 40? (a) 90 (b) 68 (c) 72 (d) 40
  5. 5.Which number is the odd one out: 40, 69, 80, 50? (a) 40 (b) 69 (c) 80 (d) 50
  6. 6.Which number is the odd one out: 61, 90, 17, 23? (a) 61 (b) 90 (c) 17 (d) 23
  7. 7.Which number is the odd one out: 73, 32, 80, 40? (a) 73 (b) 32 (c) 80 (d) 40
  8. 8.Which number is the odd one out: 88, 81, 9, 16? (a) 88 (b) 81 (c) 9 (d) 16
  9. 9.Which number is the odd one out: 37, 71, 31, 16? (a) 37 (b) 71 (c) 31 (d) 16
  10. 10.Which number is the odd one out: 25, 9, 5, 81? (a) 25 (b) 9 (c) 5 (d) 81
  11. 11.Which number is the odd one out: 46, 5, 95, 53? (a) 46 (b) 5 (c) 95 (d) 53
  12. 12.Which number is the odd one out: 83, 61, 53, 52? (a) 83 (b) 61 (c) 53 (d) 52
  13. 13.Which number is the odd one out: 6, 60, 30, 52? (a) 6 (b) 60 (c) 30 (d) 52
  14. 14.Which number is the odd one out: 13, 87, 41, 47? (a) 13 (b) 87 (c) 41 (d) 47
  15. 15.Which number is the odd one out: 34, 31, 19, 83? (a) 34 (b) 31 (c) 19 (d) 83
  16. 16.Which number is the odd one out: 48, 32, 30, 40? (a) 48 (b) 32 (c) 30 (d) 40
  17. 17.Which number is the odd one out: 39, 67, 11, 89? (a) 39 (b) 67 (c) 11 (d) 89
  18. 18.Which number is the odd one out: 96, 37, 53, 97? (a) 96 (b) 37 (c) 53 (d) 97
  19. 19.Which number is the odd one out: 29, 89, 79, 33? (a) 29 (b) 89 (c) 79 (d) 33
  20. 20.Which number is the odd one out: 7, 77, 83, 16? (a) 7 (b) 77 (c) 83 (d) 16
  21. 21.Which number is the odd one out: 81, 49, 77, 9? (a) 81 (b) 49 (c) 77 (d) 9
  22. 22.Which number is the odd one out: 96, 60, 40, 11? (a) 96 (b) 60 (c) 40 (d) 11
  23. 23.Which number is the odd one out: 48, 37, 19, 51? (a) 48 (b) 37 (c) 19 (d) 51
  24. 24.Which number is the odd one out: 56, 53, 23, 11? (a) 56 (b) 53 (c) 23 (d) 11
  25. 25.Which number is the odd one out: 61, 72, 11, 47? (a) 61 (b) 72 (c) 11 (d) 47
  26. 26.Which number is the odd one out: 20, 10, 49, 76? (a) 20 (b) 10 (c) 49 (d) 76
  27. 27.Which number is the odd one out: 89, 19, 11, 42? (a) 89 (b) 19 (c) 11 (d) 42
  28. 28.Which number is the odd one out: 71, 43, 69, 6? (a) 71 (b) 43 (c) 69 (d) 6
  29. 29.Which number is the odd one out: 31, 32, 11, 29? (a) 31 (b) 32 (c) 11 (d) 29
  30. 30.Which number is the odd one out: 8, 11, 80, 40? (a) 8 (b) 11 (c) 80 (d) 40
  31. 31.Which number is the odd one out: 13, 70, 37, 59? (a) 13 (b) 70 (c) 37 (d) 59
  32. 32.Which number is the odd one out: 43, 53, 42, 3? (a) 43 (b) 53 (c) 42 (d) 3
  33. 33.Which number is the odd one out: 67, 88, 71, 17? (a) 67 (b) 88 (c) 71 (d) 17
  34. 34.Which number is the odd one out: 42, 67, 53, 13? (a) 42 (b) 67 (c) 53 (d) 13
  35. 35.Which number is the odd one out: 99, 59, 89, 11? (a) 99 (b) 59 (c) 89 (d) 11
  36. 36.Which number is the odd one out: 67, 3, 36, 2? (a) 67 (b) 3 (c) 36 (d) 2
  37. 37.Which number is the odd one out: 47, 2, 29, 96? (a) 47 (b) 2 (c) 29 (d) 96
  38. 38.Which number is the odd one out: 61, 68, 44, 92? (a) 61 (b) 68 (c) 44 (d) 92
  39. 39.Which number is the odd one out: 20, 64, 80, 16? (a) 20 (b) 64 (c) 80 (d) 16
  40. 40.Which number is the odd one out: 61, 13, 27, 17? (a) 61 (b) 13 (c) 27 (d) 17

Answer key

  1. 33
  2. 10
  3. 20
  4. 90
  5. 69
  6. 90
  7. 73
  8. 88
  9. 16
  10. 5
  11. 46
  12. 52
  13. 52
  14. 87
  15. 34
  16. 30
  17. 39
  18. 96
  19. 33
  20. 16
  21. 77
  22. 11
  23. 48
  24. 56
  25. 72
  26. 49
  27. 42
  28. 6
  29. 32
  30. 11
  31. 70
  32. 42
  33. 88
  34. 42
  35. 99
  36. 36
  37. 96
  38. 61
  39. 20
  40. 27

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