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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 181 · 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: 67, 17, 71, 20? (a) 67 (b) 17 (c) 71 (d) 20
  2. 2.Which number is the odd one out: 83, 29, 87, 3? (a) 83 (b) 29 (c) 87 (d) 3
  3. 3.Which number is the odd one out: 83, 73, 47, 74? (a) 83 (b) 73 (c) 47 (d) 74
  4. 4.Which number is the odd one out: 71, 8, 43, 19? (a) 71 (b) 8 (c) 43 (d) 19
  5. 5.Which number is the odd one out: 47, 11, 67, 32? (a) 47 (b) 11 (c) 67 (d) 32
  6. 6.Which number is the odd one out: 90, 5, 19, 23? (a) 90 (b) 5 (c) 19 (d) 23
  7. 7.Which number is the odd one out: 90, 41, 5, 23? (a) 90 (b) 41 (c) 5 (d) 23
  8. 8.Which number is the odd one out: 23, 89, 43, 86? (a) 23 (b) 89 (c) 43 (d) 86
  9. 9.Which number is the odd one out: 41, 51, 31, 73? (a) 41 (b) 51 (c) 31 (d) 73
  10. 10.Which number is the odd one out: 29, 8, 71, 13? (a) 29 (b) 8 (c) 71 (d) 13
  11. 11.Which number is the odd one out: 43, 17, 15, 11? (a) 43 (b) 17 (c) 15 (d) 11
  12. 12.Which number is the odd one out: 53, 47, 63, 61? (a) 53 (b) 47 (c) 63 (d) 61
  13. 13.Which number is the odd one out: 73, 17, 78, 71? (a) 73 (b) 17 (c) 78 (d) 71
  14. 14.Which number is the odd one out: 11, 53, 23, 82? (a) 11 (b) 53 (c) 23 (d) 82
  15. 15.Which number is the odd one out: 74, 17, 97, 23? (a) 74 (b) 17 (c) 97 (d) 23
  16. 16.Which number is the odd one out: 19, 68, 23, 47? (a) 19 (b) 68 (c) 23 (d) 47
  17. 17.Which number is the odd one out: 17, 10, 50, 55? (a) 17 (b) 10 (c) 50 (d) 55
  18. 18.Which number is the odd one out: 96, 43, 48, 8? (a) 96 (b) 43 (c) 48 (d) 8
  19. 19.Which number is the odd one out: 60, 30, 61, 20? (a) 60 (b) 30 (c) 61 (d) 20
  20. 20.Which number is the odd one out: 26, 89, 83, 61? (a) 26 (b) 89 (c) 83 (d) 61
  21. 21.Which number is the odd one out: 59, 37, 29, 4? (a) 59 (b) 37 (c) 29 (d) 4
  22. 22.Which number is the odd one out: 96, 74, 24, 12? (a) 96 (b) 74 (c) 24 (d) 12
  23. 23.Which number is the odd one out: 37, 73, 13, 26? (a) 37 (b) 73 (c) 13 (d) 26
  24. 24.Which number is the odd one out: 44, 27, 81, 9? (a) 44 (b) 27 (c) 81 (d) 9
  25. 25.Which number is the odd one out: 77, 11, 13, 70? (a) 77 (b) 11 (c) 13 (d) 70
  26. 26.Which number is the odd one out: 38, 52, 95, 20? (a) 38 (b) 52 (c) 95 (d) 20
  27. 27.Which number is the odd one out: 46, 54, 24, 72? (a) 46 (b) 54 (c) 24 (d) 72
  28. 28.Which number is the odd one out: 42, 28, 14, 24? (a) 42 (b) 28 (c) 14 (d) 24
  29. 29.Which number is the odd one out: 38, 21, 40, 80? (a) 38 (b) 21 (c) 40 (d) 80
  30. 30.Which number is the odd one out: 2, 67, 66, 83? (a) 2 (b) 67 (c) 66 (d) 83
  31. 31.Which number is the odd one out: 61, 97, 77, 28? (a) 61 (b) 97 (c) 77 (d) 28
  32. 32.Which number is the odd one out: 9, 73, 71, 11? (a) 9 (b) 73 (c) 71 (d) 11
  33. 33.Which number is the odd one out: 34, 71, 59, 31? (a) 34 (b) 71 (c) 59 (d) 31
  34. 34.Which number is the odd one out: 59, 99, 11, 97? (a) 59 (b) 99 (c) 11 (d) 97
  35. 35.Which number is the odd one out: 83, 36, 37, 43? (a) 83 (b) 36 (c) 37 (d) 43
  36. 36.Which number is the odd one out: 35, 75, 57, 98? (a) 35 (b) 75 (c) 57 (d) 98
  37. 37.Which number is the odd one out: 11, 89, 31, 76? (a) 11 (b) 89 (c) 31 (d) 76
  38. 38.Which number is the odd one out: 97, 88, 47, 79? (a) 97 (b) 88 (c) 47 (d) 79
  39. 39.Which number is the odd one out: 67, 30, 15, 6? (a) 67 (b) 30 (c) 15 (d) 6
  40. 40.Which number is the odd one out: 73, 7, 61, 28? (a) 73 (b) 7 (c) 61 (d) 28

Answer key

  1. 20
  2. 87
  3. 74
  4. 8
  5. 32
  6. 90
  7. 90
  8. 86
  9. 51
  10. 8
  11. 15
  12. 63
  13. 78
  14. 82
  15. 74
  16. 68
  17. 17
  18. 43
  19. 61
  20. 26
  21. 4
  22. 74
  23. 26
  24. 44
  25. 70
  26. 95
  27. 46
  28. 24
  29. 21
  30. 66
  31. 28
  32. 9
  33. 34
  34. 99
  35. 36
  36. 98
  37. 76
  38. 88
  39. 67
  40. 28

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