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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 79 · 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: 73, 13, 54, 3? (a) 73 (b) 13 (c) 54 (d) 3
  2. 2.Which number is the odd one out: 13, 79, 15, 61? (a) 13 (b) 79 (c) 15 (d) 61
  3. 3.Which number is the odd one out: 4, 51, 64, 16? (a) 4 (b) 51 (c) 64 (d) 16
  4. 4.Which number is the odd one out: 10, 37, 23, 71? (a) 10 (b) 37 (c) 23 (d) 71
  5. 5.Which number is the odd one out: 38, 24, 96, 78? (a) 38 (b) 24 (c) 96 (d) 78
  6. 6.Which number is the odd one out: 19, 29, 78, 97? (a) 19 (b) 29 (c) 78 (d) 97
  7. 7.Which number is the odd one out: 96, 8, 7, 48? (a) 96 (b) 8 (c) 7 (d) 48
  8. 8.Which number is the odd one out: 23, 41, 76, 61? (a) 23 (b) 41 (c) 76 (d) 61
  9. 9.Which number is the odd one out: 19, 53, 23, 35? (a) 19 (b) 53 (c) 23 (d) 35
  10. 10.Which number is the odd one out: 53, 67, 23, 76? (a) 53 (b) 67 (c) 23 (d) 76
  11. 11.Which number is the odd one out: 40, 32, 8, 75? (a) 40 (b) 32 (c) 8 (d) 75
  12. 12.Which number is the odd one out: 99, 54, 18, 87? (a) 99 (b) 54 (c) 18 (d) 87
  13. 13.Which number is the odd one out: 71, 19, 29, 14? (a) 71 (b) 19 (c) 29 (d) 14
  14. 14.Which number is the odd one out: 79, 37, 13, 98? (a) 79 (b) 37 (c) 13 (d) 98
  15. 15.Which number is the odd one out: 11, 31, 76, 71? (a) 11 (b) 31 (c) 76 (d) 71
  16. 16.Which number is the odd one out: 61, 2, 89, 32? (a) 61 (b) 2 (c) 89 (d) 32
  17. 17.Which number is the odd one out: 38, 41, 47, 11? (a) 38 (b) 41 (c) 47 (d) 11
  18. 18.Which number is the odd one out: 88, 78, 32, 8? (a) 88 (b) 78 (c) 32 (d) 8
  19. 19.Which number is the odd one out: 79, 59, 19, 32? (a) 79 (b) 59 (c) 19 (d) 32
  20. 20.Which number is the odd one out: 13, 31, 10, 19? (a) 13 (b) 31 (c) 10 (d) 19
  21. 21.Which number is the odd one out: 19, 60, 23, 29? (a) 19 (b) 60 (c) 23 (d) 29
  22. 22.Which number is the odd one out: 23, 45, 89, 17? (a) 23 (b) 45 (c) 89 (d) 17
  23. 23.Which number is the odd one out: 77, 19, 84, 73? (a) 77 (b) 19 (c) 84 (d) 73
  24. 24.Which number is the odd one out: 54, 25, 27, 90? (a) 54 (b) 25 (c) 27 (d) 90
  25. 25.Which number is the odd one out: 59, 88, 67, 89? (a) 59 (b) 88 (c) 67 (d) 89
  26. 26.Which number is the odd one out: 83, 37, 72, 69? (a) 83 (b) 37 (c) 72 (d) 69
  27. 27.Which number is the odd one out: 87, 96, 48, 24? (a) 87 (b) 96 (c) 48 (d) 24
  28. 28.Which number is the odd one out: 28, 11, 7, 59? (a) 28 (b) 11 (c) 7 (d) 59
  29. 29.Which number is the odd one out: 63, 3, 79, 13? (a) 63 (b) 3 (c) 79 (d) 13
  30. 30.Which number is the odd one out: 83, 67, 31, 22? (a) 83 (b) 67 (c) 31 (d) 22
  31. 31.Which number is the odd one out: 19, 88, 80, 40? (a) 19 (b) 88 (c) 80 (d) 40
  32. 32.Which number is the odd one out: 47, 76, 2, 71? (a) 47 (b) 76 (c) 2 (d) 71
  33. 33.Which number is the odd one out: 5, 61, 73, 90? (a) 5 (b) 61 (c) 73 (d) 90
  34. 34.Which number is the odd one out: 59, 71, 23, 74? (a) 59 (b) 71 (c) 23 (d) 74
  35. 35.Which number is the odd one out: 32, 48, 41, 96? (a) 32 (b) 48 (c) 41 (d) 96
  36. 36.Which number is the odd one out: 20, 59, 71, 97? (a) 20 (b) 59 (c) 71 (d) 97
  37. 37.Which number is the odd one out: 93, 11, 97, 83? (a) 93 (b) 11 (c) 97 (d) 83
  38. 38.Which number is the odd one out: 17, 56, 47, 89? (a) 17 (b) 56 (c) 47 (d) 89
  39. 39.Which number is the odd one out: 70, 35, 98, 9? (a) 70 (b) 35 (c) 98 (d) 9
  40. 40.Which number is the odd one out: 37, 62, 38, 2? (a) 37 (b) 62 (c) 38 (d) 2

Answer key

  1. 54
  2. 15
  3. 51
  4. 10
  5. 38
  6. 78
  7. 7
  8. 76
  9. 35
  10. 76
  11. 75
  12. 87
  13. 14
  14. 98
  15. 76
  16. 32
  17. 38
  18. 78
  19. 32
  20. 10
  21. 60
  22. 45
  23. 84
  24. 25
  25. 88
  26. 72
  27. 87
  28. 28
  29. 63
  30. 22
  31. 19
  32. 76
  33. 90
  34. 74
  35. 41
  36. 20
  37. 93
  38. 56
  39. 9
  40. 37

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