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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 989 · 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: 9, 16, 40, 81? (a) 9 (b) 16 (c) 40 (d) 81
  2. 2.Which number is the odd one out: 46, 61, 23, 79? (a) 46 (b) 61 (c) 23 (d) 79
  3. 3.Which number is the odd one out: 65, 85, 27, 15? (a) 65 (b) 85 (c) 27 (d) 15
  4. 4.Which number is the odd one out: 17, 80, 32, 10? (a) 17 (b) 80 (c) 32 (d) 10
  5. 5.Which number is the odd one out: 36, 21, 91, 28? (a) 36 (b) 21 (c) 91 (d) 28
  6. 6.Which number is the odd one out: 11, 31, 23, 24? (a) 11 (b) 31 (c) 23 (d) 24
  7. 7.Which number is the odd one out: 17, 19, 62, 13? (a) 17 (b) 19 (c) 62 (d) 13
  8. 8.Which number is the odd one out: 17, 66, 79, 41? (a) 17 (b) 66 (c) 79 (d) 41
  9. 9.Which number is the odd one out: 53, 29, 24, 89? (a) 53 (b) 29 (c) 24 (d) 89
  10. 10.Which number is the odd one out: 37, 2, 71, 6? (a) 37 (b) 2 (c) 71 (d) 6
  11. 11.Which number is the odd one out: 11, 2, 3, 96? (a) 11 (b) 2 (c) 3 (d) 96
  12. 12.Which number is the odd one out: 2, 31, 89, 43? (a) 2 (b) 31 (c) 89 (d) 43
  13. 13.Which number is the odd one out: 92, 59, 53, 29? (a) 92 (b) 59 (c) 53 (d) 29
  14. 14.Which number is the odd one out: 73, 31, 9, 19? (a) 73 (b) 31 (c) 9 (d) 19
  15. 15.Which number is the odd one out: 20, 11, 5, 29? (a) 20 (b) 11 (c) 5 (d) 29
  16. 16.Which number is the odd one out: 68, 32, 8, 45? (a) 68 (b) 32 (c) 8 (d) 45
  17. 17.Which number is the odd one out: 71, 57, 83, 13? (a) 71 (b) 57 (c) 83 (d) 13
  18. 18.Which number is the odd one out: 65, 59, 41, 31? (a) 65 (b) 59 (c) 41 (d) 31
  19. 19.Which number is the odd one out: 96, 89, 8, 48? (a) 96 (b) 89 (c) 8 (d) 48
  20. 20.Which number is the odd one out: 37, 2, 31, 24? (a) 37 (b) 2 (c) 31 (d) 24
  21. 21.Which number is the odd one out: 88, 47, 4, 64? (a) 88 (b) 47 (c) 4 (d) 64
  22. 22.Which number is the odd one out: 41, 47, 20, 71? (a) 41 (b) 47 (c) 20 (d) 71
  23. 23.Which number is the odd one out: 23, 53, 68, 37? (a) 23 (b) 53 (c) 68 (d) 37
  24. 24.Which number is the odd one out: 74, 61, 38, 46? (a) 74 (b) 61 (c) 38 (d) 46
  25. 25.Which number is the odd one out: 13, 89, 37, 48? (a) 13 (b) 89 (c) 37 (d) 48
  26. 26.Which number is the odd one out: 24, 96, 48, 77? (a) 24 (b) 96 (c) 48 (d) 77
  27. 27.Which number is the odd one out: 67, 76, 17, 11? (a) 67 (b) 76 (c) 17 (d) 11
  28. 28.Which number is the odd one out: 6, 69, 41, 67? (a) 6 (b) 69 (c) 41 (d) 67
  29. 29.Which number is the odd one out: 91, 59, 29, 7? (a) 91 (b) 59 (c) 29 (d) 7
  30. 30.Which number is the odd one out: 37, 67, 71, 80? (a) 37 (b) 67 (c) 71 (d) 80
  31. 31.Which number is the odd one out: 63, 11, 41, 83? (a) 63 (b) 11 (c) 41 (d) 83
  32. 32.Which number is the odd one out: 59, 18, 53, 71? (a) 59 (b) 18 (c) 53 (d) 71
  33. 33.Which number is the odd one out: 51, 37, 67, 19? (a) 51 (b) 37 (c) 67 (d) 19
  34. 34.Which number is the odd one out: 81, 28, 70, 20? (a) 81 (b) 28 (c) 70 (d) 20
  35. 35.Which number is the odd one out: 3, 41, 79, 90? (a) 3 (b) 41 (c) 79 (d) 90
  36. 36.Which number is the odd one out: 13, 21, 17, 61? (a) 13 (b) 21 (c) 17 (d) 61
  37. 37.Which number is the odd one out: 40, 10, 43, 80? (a) 40 (b) 10 (c) 43 (d) 80
  38. 38.Which number is the odd one out: 19, 37, 23, 12? (a) 19 (b) 37 (c) 23 (d) 12
  39. 39.Which number is the odd one out: 71, 73, 23, 20? (a) 71 (b) 73 (c) 23 (d) 20
  40. 40.Which number is the odd one out: 37, 89, 99, 59? (a) 37 (b) 89 (c) 99 (d) 59

Answer key

  1. 40
  2. 46
  3. 27
  4. 17
  5. 36
  6. 24
  7. 62
  8. 66
  9. 24
  10. 6
  11. 96
  12. 2
  13. 92
  14. 9
  15. 20
  16. 45
  17. 57
  18. 65
  19. 89
  20. 24
  21. 47
  22. 20
  23. 68
  24. 61
  25. 48
  26. 77
  27. 76
  28. 6
  29. 91
  30. 80
  31. 63
  32. 18
  33. 51
  34. 81
  35. 90
  36. 21
  37. 43
  38. 12
  39. 20
  40. 99

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