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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 704 · 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: 61, 79, 6, 11? (a) 61 (b) 79 (c) 6 (d) 11
  2. 2.Which number is the odd one out: 73, 49, 29, 83? (a) 73 (b) 49 (c) 29 (d) 83
  3. 3.Which number is the odd one out: 59, 43, 11, 68? (a) 59 (b) 43 (c) 11 (d) 68
  4. 4.Which number is the odd one out: 31, 21, 47, 41? (a) 31 (b) 21 (c) 47 (d) 41
  5. 5.Which number is the odd one out: 13, 11, 78, 73? (a) 13 (b) 11 (c) 78 (d) 73
  6. 6.Which number is the odd one out: 66, 99, 96, 24? (a) 66 (b) 99 (c) 96 (d) 24
  7. 7.Which number is the odd one out: 40, 85, 65, 8? (a) 40 (b) 85 (c) 65 (d) 8
  8. 8.Which number is the odd one out: 17, 71, 29, 26? (a) 17 (b) 71 (c) 29 (d) 26
  9. 9.Which number is the odd one out: 96, 24, 75, 48? (a) 96 (b) 24 (c) 75 (d) 48
  10. 10.Which number is the odd one out: 59, 3, 84, 71? (a) 59 (b) 3 (c) 84 (d) 71
  11. 11.Which number is the odd one out: 67, 47, 41, 15? (a) 67 (b) 47 (c) 41 (d) 15
  12. 12.Which number is the odd one out: 55, 95, 54, 30? (a) 55 (b) 95 (c) 54 (d) 30
  13. 13.Which number is the odd one out: 17, 40, 59, 13? (a) 17 (b) 40 (c) 59 (d) 13
  14. 14.Which number is the odd one out: 41, 4, 53, 79? (a) 41 (b) 4 (c) 53 (d) 79
  15. 15.Which number is the odd one out: 18, 19, 11, 83? (a) 18 (b) 19 (c) 11 (d) 83
  16. 16.Which number is the odd one out: 14, 63, 36, 91? (a) 14 (b) 63 (c) 36 (d) 91
  17. 17.Which number is the odd one out: 5, 88, 8, 32? (a) 5 (b) 88 (c) 8 (d) 32
  18. 18.Which number is the odd one out: 48, 73, 78, 96? (a) 48 (b) 73 (c) 78 (d) 96
  19. 19.Which number is the odd one out: 64, 80, 16, 75? (a) 64 (b) 80 (c) 16 (d) 75
  20. 20.Which number is the odd one out: 76, 79, 19, 17? (a) 76 (b) 79 (c) 19 (d) 17
  21. 21.Which number is the odd one out: 61, 89, 78, 41? (a) 61 (b) 89 (c) 78 (d) 41
  22. 22.Which number is the odd one out: 19, 71, 16, 59? (a) 19 (b) 71 (c) 16 (d) 59
  23. 23.Which number is the odd one out: 63, 35, 9, 81? (a) 63 (b) 35 (c) 9 (d) 81
  24. 24.Which number is the odd one out: 43, 83, 71, 57? (a) 43 (b) 83 (c) 71 (d) 57
  25. 25.Which number is the odd one out: 20, 53, 97, 31? (a) 20 (b) 53 (c) 97 (d) 31
  26. 26.Which number is the odd one out: 27, 80, 45, 99? (a) 27 (b) 80 (c) 45 (d) 99
  27. 27.Which number is the odd one out: 21, 47, 59, 11? (a) 21 (b) 47 (c) 59 (d) 11
  28. 28.Which number is the odd one out: 18, 24, 72, 70? (a) 18 (b) 24 (c) 72 (d) 70
  29. 29.Which number is the odd one out: 59, 91, 98, 47? (a) 59 (b) 91 (c) 98 (d) 47
  30. 30.Which number is the odd one out: 55, 95, 85, 37? (a) 55 (b) 95 (c) 85 (d) 37
  31. 31.Which number is the odd one out: 83, 72, 61, 19? (a) 83 (b) 72 (c) 61 (d) 19
  32. 32.Which number is the odd one out: 60, 19, 5, 47? (a) 60 (b) 19 (c) 5 (d) 47
  33. 33.Which number is the odd one out: 48, 73, 96, 24? (a) 48 (b) 73 (c) 96 (d) 24
  34. 34.Which number is the odd one out: 68, 88, 50, 80? (a) 68 (b) 88 (c) 50 (d) 80
  35. 35.Which number is the odd one out: 17, 77, 7, 83? (a) 17 (b) 77 (c) 7 (d) 83
  36. 36.Which number is the odd one out: 23, 64, 61, 41? (a) 23 (b) 64 (c) 61 (d) 41
  37. 37.Which number is the odd one out: 80, 40, 32, 21? (a) 80 (b) 40 (c) 32 (d) 21
  38. 38.Which number is the odd one out: 41, 9, 89, 83? (a) 41 (b) 9 (c) 89 (d) 83
  39. 39.Which number is the odd one out: 6, 83, 67, 73? (a) 6 (b) 83 (c) 67 (d) 73
  40. 40.Which number is the odd one out: 88, 32, 8, 89? (a) 88 (b) 32 (c) 8 (d) 89

Answer key

  1. 6
  2. 49
  3. 68
  4. 21
  5. 78
  6. 99
  7. 8
  8. 26
  9. 75
  10. 84
  11. 15
  12. 54
  13. 40
  14. 4
  15. 18
  16. 36
  17. 5
  18. 73
  19. 75
  20. 76
  21. 78
  22. 16
  23. 35
  24. 57
  25. 20
  26. 80
  27. 21
  28. 70
  29. 98
  30. 37
  31. 72
  32. 60
  33. 73
  34. 50
  35. 77
  36. 64
  37. 21
  38. 9
  39. 6
  40. 89

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