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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 527 · 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: 80, 7, 50, 40? (a) 80 (b) 7 (c) 50 (d) 40
  2. 2.Which number is the odd one out: 79, 91, 28, 43? (a) 79 (b) 91 (c) 28 (d) 43
  3. 3.Which number is the odd one out: 29, 73, 51, 83? (a) 29 (b) 73 (c) 51 (d) 83
  4. 4.Which number is the odd one out: 96, 3, 12, 24? (a) 96 (b) 3 (c) 12 (d) 24
  5. 5.Which number is the odd one out: 13, 64, 83, 19? (a) 13 (b) 64 (c) 83 (d) 19
  6. 6.Which number is the odd one out: 11, 60, 59, 37? (a) 11 (b) 60 (c) 59 (d) 37
  7. 7.Which number is the odd one out: 18, 35, 54, 27? (a) 18 (b) 35 (c) 54 (d) 27
  8. 8.Which number is the odd one out: 13, 12, 73, 11? (a) 13 (b) 12 (c) 73 (d) 11
  9. 9.Which number is the odd one out: 41, 97, 79, 18? (a) 41 (b) 97 (c) 79 (d) 18
  10. 10.Which number is the odd one out: 17, 53, 54, 29? (a) 17 (b) 53 (c) 54 (d) 29
  11. 11.Which number is the odd one out: 88, 9, 64, 32? (a) 88 (b) 9 (c) 64 (d) 32
  12. 12.Which number is the odd one out: 56, 53, 61, 11? (a) 56 (b) 53 (c) 61 (d) 11
  13. 13.Which number is the odd one out: 9, 73, 27, 81? (a) 9 (b) 73 (c) 27 (d) 81
  14. 14.Which number is the odd one out: 96, 28, 8, 24? (a) 96 (b) 28 (c) 8 (d) 24
  15. 15.Which number is the odd one out: 23, 43, 53, 78? (a) 23 (b) 43 (c) 53 (d) 78
  16. 16.Which number is the odd one out: 37, 47, 20, 97? (a) 37 (b) 47 (c) 20 (d) 97
  17. 17.Which number is the odd one out: 11, 74, 43, 19? (a) 11 (b) 74 (c) 43 (d) 19
  18. 18.Which number is the odd one out: 18, 43, 54, 87? (a) 18 (b) 43 (c) 54 (d) 87
  19. 19.Which number is the odd one out: 72, 11, 47, 73? (a) 72 (b) 11 (c) 47 (d) 73
  20. 20.Which number is the odd one out: 90, 17, 3, 83? (a) 90 (b) 17 (c) 3 (d) 83
  21. 21.Which number is the odd one out: 35, 11, 59, 89? (a) 35 (b) 11 (c) 59 (d) 89
  22. 22.Which number is the odd one out: 93, 14, 21, 98? (a) 93 (b) 14 (c) 21 (d) 98
  23. 23.Which number is the odd one out: 9, 47, 17, 11? (a) 9 (b) 47 (c) 17 (d) 11
  24. 24.Which number is the odd one out: 2, 83, 97, 30? (a) 2 (b) 83 (c) 97 (d) 30
  25. 25.Which number is the odd one out: 50, 71, 17, 19? (a) 50 (b) 71 (c) 17 (d) 19
  26. 26.Which number is the odd one out: 89, 5, 96, 85? (a) 89 (b) 5 (c) 96 (d) 85
  27. 27.Which number is the odd one out: 84, 42, 46, 12? (a) 84 (b) 42 (c) 46 (d) 12
  28. 28.Which number is the odd one out: 98, 8, 96, 48? (a) 98 (b) 8 (c) 96 (d) 48
  29. 29.Which number is the odd one out: 48, 34, 24, 8? (a) 48 (b) 34 (c) 24 (d) 8
  30. 30.Which number is the odd one out: 29, 11, 44, 71? (a) 29 (b) 11 (c) 44 (d) 71
  31. 31.Which number is the odd one out: 97, 11, 67, 91? (a) 97 (b) 11 (c) 67 (d) 91
  32. 32.Which number is the odd one out: 21, 84, 12, 19? (a) 21 (b) 84 (c) 12 (d) 19
  33. 33.Which number is the odd one out: 83, 89, 41, 63? (a) 83 (b) 89 (c) 41 (d) 63
  34. 34.Which number is the odd one out: 88, 60, 25, 96? (a) 88 (b) 60 (c) 25 (d) 96
  35. 35.Which number is the odd one out: 88, 96, 90, 92? (a) 88 (b) 96 (c) 90 (d) 92
  36. 36.Which number is the odd one out: 61, 78, 43, 31? (a) 61 (b) 78 (c) 43 (d) 31
  37. 37.Which number is the odd one out: 10, 66, 80, 40? (a) 10 (b) 66 (c) 80 (d) 40
  38. 38.Which number is the odd one out: 41, 11, 17, 33? (a) 41 (b) 11 (c) 17 (d) 33
  39. 39.Which number is the odd one out: 96, 32, 44, 24? (a) 96 (b) 32 (c) 44 (d) 24
  40. 40.Which number is the odd one out: 79, 26, 73, 29? (a) 79 (b) 26 (c) 73 (d) 29

Answer key

  1. 7
  2. 28
  3. 51
  4. 3
  5. 64
  6. 60
  7. 35
  8. 12
  9. 18
  10. 54
  11. 9
  12. 56
  13. 73
  14. 28
  15. 78
  16. 20
  17. 74
  18. 43
  19. 72
  20. 90
  21. 35
  22. 93
  23. 9
  24. 30
  25. 50
  26. 96
  27. 46
  28. 98
  29. 34
  30. 44
  31. 91
  32. 19
  33. 63
  34. 25
  35. 90
  36. 78
  37. 66
  38. 33
  39. 44
  40. 26

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