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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 244 · 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, 67, 66, 51? (a) 23 (b) 67 (c) 66 (d) 51
  2. 2.Which number is the odd one out: 11, 35, 89, 97? (a) 11 (b) 35 (c) 89 (d) 97
  3. 3.Which number is the odd one out: 45, 5, 9, 81? (a) 45 (b) 5 (c) 9 (d) 81
  4. 4.Which number is the odd one out: 98, 67, 41, 37? (a) 98 (b) 67 (c) 41 (d) 37
  5. 5.Which number is the odd one out: 53, 47, 92, 97? (a) 53 (b) 47 (c) 92 (d) 97
  6. 6.Which number is the odd one out: 48, 32, 7, 24? (a) 48 (b) 32 (c) 7 (d) 24
  7. 7.Which number is the odd one out: 17, 23, 9, 71? (a) 17 (b) 23 (c) 9 (d) 71
  8. 8.Which number is the odd one out: 83, 41, 25, 11? (a) 83 (b) 41 (c) 25 (d) 11
  9. 9.Which number is the odd one out: 4, 64, 17, 16? (a) 4 (b) 64 (c) 17 (d) 16
  10. 10.Which number is the odd one out: 29, 47, 23, 6? (a) 29 (b) 47 (c) 23 (d) 6
  11. 11.Which number is the odd one out: 61, 5, 13, 95? (a) 61 (b) 5 (c) 13 (d) 95
  12. 12.Which number is the odd one out: 67, 83, 70, 55? (a) 67 (b) 83 (c) 70 (d) 55
  13. 13.Which number is the odd one out: 73, 83, 67, 14? (a) 73 (b) 83 (c) 67 (d) 14
  14. 14.Which number is the odd one out: 2, 6, 13, 59? (a) 2 (b) 6 (c) 13 (d) 59
  15. 15.Which number is the odd one out: 89, 83, 77, 47? (a) 89 (b) 83 (c) 77 (d) 47
  16. 16.Which number is the odd one out: 24, 96, 48, 44? (a) 24 (b) 96 (c) 48 (d) 44
  17. 17.Which number is the odd one out: 29, 31, 69, 30? (a) 29 (b) 31 (c) 69 (d) 30
  18. 18.Which number is the odd one out: 8, 19, 40, 80? (a) 8 (b) 19 (c) 40 (d) 80
  19. 19.Which number is the odd one out: 80, 81, 4, 9? (a) 80 (b) 81 (c) 4 (d) 9
  20. 20.Which number is the odd one out: 84, 41, 31, 47? (a) 84 (b) 41 (c) 31 (d) 47
  21. 21.Which number is the odd one out: 58, 72, 96, 18? (a) 58 (b) 72 (c) 96 (d) 18
  22. 22.Which number is the odd one out: 71, 19, 59, 54? (a) 71 (b) 19 (c) 59 (d) 54
  23. 23.Which number is the odd one out: 46, 13, 3, 87? (a) 46 (b) 13 (c) 3 (d) 87
  24. 24.Which number is the odd one out: 17, 13, 87, 78? (a) 17 (b) 13 (c) 87 (d) 78
  25. 25.Which number is the odd one out: 47, 31, 70, 11? (a) 47 (b) 31 (c) 70 (d) 11
  26. 26.Which number is the odd one out: 67, 13, 28, 31? (a) 67 (b) 13 (c) 28 (d) 31
  27. 27.Which number is the odd one out: 22, 83, 43, 2? (a) 22 (b) 83 (c) 43 (d) 2
  28. 28.Which number is the odd one out: 54, 66, 50, 18? (a) 54 (b) 66 (c) 50 (d) 18
  29. 29.Which number is the odd one out: 45, 5, 47, 29? (a) 45 (b) 5 (c) 47 (d) 29
  30. 30.Which number is the odd one out: 23, 73, 87, 13? (a) 23 (b) 73 (c) 87 (d) 13
  31. 31.Which number is the odd one out: 79, 19, 72, 41? (a) 79 (b) 19 (c) 72 (d) 41
  32. 32.Which number is the odd one out: 73, 64, 89, 11? (a) 73 (b) 64 (c) 89 (d) 11
  33. 33.Which number is the odd one out: 19, 13, 79, 96? (a) 19 (b) 13 (c) 79 (d) 96
  34. 34.Which number is the odd one out: 32, 55, 65, 50? (a) 32 (b) 55 (c) 65 (d) 50
  35. 35.Which number is the odd one out: 43, 27, 23, 67? (a) 43 (b) 27 (c) 23 (d) 67
  36. 36.Which number is the odd one out: 96, 84, 34, 56? (a) 96 (b) 84 (c) 34 (d) 56
  37. 37.Which number is the odd one out: 62, 34, 94, 31? (a) 62 (b) 34 (c) 94 (d) 31
  38. 38.Which number is the odd one out: 89, 33, 11, 29? (a) 89 (b) 33 (c) 11 (d) 29
  39. 39.Which number is the odd one out: 71, 45, 5, 97? (a) 71 (b) 45 (c) 5 (d) 97
  40. 40.Which number is the odd one out: 29, 16, 23, 59? (a) 29 (b) 16 (c) 23 (d) 59

Answer key

  1. 66
  2. 35
  3. 5
  4. 98
  5. 92
  6. 7
  7. 9
  8. 25
  9. 17
  10. 6
  11. 95
  12. 70
  13. 14
  14. 6
  15. 77
  16. 44
  17. 30
  18. 19
  19. 80
  20. 84
  21. 58
  22. 54
  23. 46
  24. 78
  25. 70
  26. 28
  27. 22
  28. 50
  29. 45
  30. 87
  31. 72
  32. 64
  33. 96
  34. 32
  35. 27
  36. 34
  37. 31
  38. 33
  39. 45
  40. 16

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