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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 981 · 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: 42, 3, 2, 83? (a) 42 (b) 3 (c) 2 (d) 83
  2. 2.Which number is the odd one out: 64, 80, 85, 16? (a) 64 (b) 80 (c) 85 (d) 16
  3. 3.Which number is the odd one out: 78, 53, 19, 2? (a) 78 (b) 53 (c) 19 (d) 2
  4. 4.Which number is the odd one out: 84, 28, 52, 18? (a) 84 (b) 28 (c) 52 (d) 18
  5. 5.Which number is the odd one out: 97, 9, 47, 83? (a) 97 (b) 9 (c) 47 (d) 83
  6. 6.Which number is the odd one out: 78, 79, 21, 42? (a) 78 (b) 79 (c) 21 (d) 42
  7. 7.Which number is the odd one out: 8, 48, 96, 43? (a) 8 (b) 48 (c) 96 (d) 43
  8. 8.Which number is the odd one out: 43, 31, 73, 42? (a) 43 (b) 31 (c) 73 (d) 42
  9. 9.Which number is the odd one out: 13, 61, 39, 59? (a) 13 (b) 61 (c) 39 (d) 59
  10. 10.Which number is the odd one out: 71, 11, 43, 34? (a) 71 (b) 11 (c) 43 (d) 34
  11. 11.Which number is the odd one out: 22, 61, 11, 17? (a) 22 (b) 61 (c) 11 (d) 17
  12. 12.Which number is the odd one out: 40, 67, 65, 17? (a) 40 (b) 67 (c) 65 (d) 17
  13. 13.Which number is the odd one out: 24, 78, 70, 96? (a) 24 (b) 78 (c) 70 (d) 96
  14. 14.Which number is the odd one out: 53, 17, 61, 80? (a) 53 (b) 17 (c) 61 (d) 80
  15. 15.Which number is the odd one out: 43, 71, 19, 14? (a) 43 (b) 71 (c) 19 (d) 14
  16. 16.Which number is the odd one out: 47, 29, 44, 61? (a) 47 (b) 29 (c) 44 (d) 61
  17. 17.Which number is the odd one out: 60, 31, 5, 37? (a) 60 (b) 31 (c) 5 (d) 37
  18. 18.Which number is the odd one out: 97, 79, 18, 29? (a) 97 (b) 79 (c) 18 (d) 29
  19. 19.Which number is the odd one out: 5, 89, 3, 75? (a) 5 (b) 89 (c) 3 (d) 75
  20. 20.Which number is the odd one out: 85, 71, 67, 10? (a) 85 (b) 71 (c) 67 (d) 10
  21. 21.Which number is the odd one out: 19, 59, 64, 37? (a) 19 (b) 59 (c) 64 (d) 37
  22. 22.Which number is the odd one out: 43, 97, 11, 36? (a) 43 (b) 97 (c) 11 (d) 36
  23. 23.Which number is the odd one out: 55, 12, 5, 3? (a) 55 (b) 12 (c) 5 (d) 3
  24. 24.Which number is the odd one out: 73, 22, 17, 37? (a) 73 (b) 22 (c) 17 (d) 37
  25. 25.Which number is the odd one out: 73, 56, 83, 97? (a) 73 (b) 56 (c) 83 (d) 97
  26. 26.Which number is the odd one out: 86, 46, 87, 58? (a) 86 (b) 46 (c) 87 (d) 58
  27. 27.Which number is the odd one out: 61, 59, 86, 71? (a) 61 (b) 59 (c) 86 (d) 71
  28. 28.Which number is the odd one out: 79, 31, 45, 37? (a) 79 (b) 31 (c) 45 (d) 37
  29. 29.Which number is the odd one out: 97, 51, 11, 83? (a) 97 (b) 51 (c) 11 (d) 83
  30. 30.Which number is the odd one out: 7, 86, 52, 44? (a) 7 (b) 86 (c) 52 (d) 44
  31. 31.Which number is the odd one out: 59, 29, 67, 52? (a) 59 (b) 29 (c) 67 (d) 52
  32. 32.Which number is the odd one out: 7, 90, 17, 77? (a) 7 (b) 90 (c) 17 (d) 77
  33. 33.Which number is the odd one out: 81, 24, 99, 36? (a) 81 (b) 24 (c) 99 (d) 36
  34. 34.Which number is the odd one out: 74, 24, 18, 72? (a) 74 (b) 24 (c) 18 (d) 72
  35. 35.Which number is the odd one out: 61, 66, 83, 19? (a) 61 (b) 66 (c) 83 (d) 19
  36. 36.Which number is the odd one out: 42, 84, 45, 60? (a) 42 (b) 84 (c) 45 (d) 60
  37. 37.Which number is the odd one out: 47, 16, 89, 61? (a) 47 (b) 16 (c) 89 (d) 61
  38. 38.Which number is the odd one out: 53, 23, 98, 7? (a) 53 (b) 23 (c) 98 (d) 7
  39. 39.Which number is the odd one out: 48, 30, 64, 4? (a) 48 (b) 30 (c) 64 (d) 4
  40. 40.Which number is the odd one out: 30, 37, 47, 43? (a) 30 (b) 37 (c) 47 (d) 43

Answer key

  1. 42
  2. 85
  3. 78
  4. 18
  5. 9
  6. 79
  7. 43
  8. 42
  9. 39
  10. 34
  11. 22
  12. 40
  13. 70
  14. 80
  15. 14
  16. 44
  17. 60
  18. 18
  19. 75
  20. 10
  21. 64
  22. 36
  23. 12
  24. 22
  25. 56
  26. 87
  27. 86
  28. 45
  29. 51
  30. 7
  31. 52
  32. 90
  33. 24
  34. 74
  35. 66
  36. 45
  37. 16
  38. 98
  39. 30
  40. 30

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