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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 897 · 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: 69, 3, 20, 23? (a) 69 (b) 3 (c) 20 (d) 23
  2. 2.Which number is the odd one out: 49, 19, 17, 37? (a) 49 (b) 19 (c) 17 (d) 37
  3. 3.Which number is the odd one out: 70, 31, 23, 89? (a) 70 (b) 31 (c) 23 (d) 89
  4. 4.Which number is the odd one out: 73, 45, 3, 47? (a) 73 (b) 45 (c) 3 (d) 47
  5. 5.Which number is the odd one out: 29, 3, 99, 67? (a) 29 (b) 3 (c) 99 (d) 67
  6. 6.Which number is the odd one out: 15, 97, 23, 83? (a) 15 (b) 97 (c) 23 (d) 83
  7. 7.Which number is the odd one out: 60, 89, 13, 43? (a) 60 (b) 89 (c) 13 (d) 43
  8. 8.Which number is the odd one out: 99, 37, 19, 41? (a) 99 (b) 37 (c) 19 (d) 41
  9. 9.Which number is the odd one out: 13, 69, 43, 19? (a) 13 (b) 69 (c) 43 (d) 19
  10. 10.Which number is the odd one out: 34, 19, 11, 43? (a) 34 (b) 19 (c) 11 (d) 43
  11. 11.Which number is the odd one out: 48, 42, 96, 7? (a) 48 (b) 42 (c) 96 (d) 7
  12. 12.Which number is the odd one out: 69, 3, 97, 71? (a) 69 (b) 3 (c) 97 (d) 71
  13. 13.Which number is the odd one out: 97, 28, 17, 13? (a) 97 (b) 28 (c) 17 (d) 13
  14. 14.Which number is the odd one out: 13, 11, 21, 23? (a) 13 (b) 11 (c) 21 (d) 23
  15. 15.Which number is the odd one out: 3, 29, 2, 24? (a) 3 (b) 29 (c) 2 (d) 24
  16. 16.Which number is the odd one out: 99, 95, 40, 80? (a) 99 (b) 95 (c) 40 (d) 80
  17. 17.Which number is the odd one out: 47, 61, 24, 83? (a) 47 (b) 61 (c) 24 (d) 83
  18. 18.Which number is the odd one out: 84, 35, 65, 15? (a) 84 (b) 35 (c) 65 (d) 15
  19. 19.Which number is the odd one out: 32, 48, 28, 24? (a) 32 (b) 48 (c) 28 (d) 24
  20. 20.Which number is the odd one out: 78, 11, 71, 2? (a) 78 (b) 11 (c) 71 (d) 2
  21. 21.Which number is the odd one out: 12, 71, 97, 17? (a) 12 (b) 71 (c) 97 (d) 17
  22. 22.Which number is the odd one out: 86, 95, 10, 85? (a) 86 (b) 95 (c) 10 (d) 85
  23. 23.Which number is the odd one out: 37, 93, 79, 71? (a) 37 (b) 93 (c) 79 (d) 71
  24. 24.Which number is the odd one out: 74, 47, 37, 31? (a) 74 (b) 47 (c) 37 (d) 31
  25. 25.Which number is the odd one out: 37, 11, 87, 29? (a) 37 (b) 11 (c) 87 (d) 29
  26. 26.Which number is the odd one out: 99, 31, 61, 72? (a) 99 (b) 31 (c) 61 (d) 72
  27. 27.Which number is the odd one out: 3, 67, 54, 19? (a) 3 (b) 67 (c) 54 (d) 19
  28. 28.Which number is the odd one out: 79, 61, 50, 53? (a) 79 (b) 61 (c) 50 (d) 53
  29. 29.Which number is the odd one out: 59, 71, 41, 22? (a) 59 (b) 71 (c) 41 (d) 22
  30. 30.Which number is the odd one out: 54, 3, 18, 99? (a) 54 (b) 3 (c) 18 (d) 99
  31. 31.Which number is the odd one out: 59, 53, 60, 2? (a) 59 (b) 53 (c) 60 (d) 2
  32. 32.Which number is the odd one out: 13, 61, 56, 59? (a) 13 (b) 61 (c) 56 (d) 59
  33. 33.Which number is the odd one out: 23, 16, 13, 37? (a) 23 (b) 16 (c) 13 (d) 37
  34. 34.Which number is the odd one out: 71, 13, 65, 43? (a) 71 (b) 13 (c) 65 (d) 43
  35. 35.Which number is the odd one out: 61, 13, 22, 89? (a) 61 (b) 13 (c) 22 (d) 89
  36. 36.Which number is the odd one out: 24, 41, 13, 97? (a) 24 (b) 41 (c) 13 (d) 97
  37. 37.Which number is the odd one out: 43, 25, 97, 31? (a) 43 (b) 25 (c) 97 (d) 31
  38. 38.Which number is the odd one out: 24, 59, 72, 18? (a) 24 (b) 59 (c) 72 (d) 18
  39. 39.Which number is the odd one out: 90, 54, 45, 18? (a) 90 (b) 54 (c) 45 (d) 18
  40. 40.Which number is the odd one out: 42, 48, 96, 24? (a) 42 (b) 48 (c) 96 (d) 24

Answer key

  1. 20
  2. 49
  3. 70
  4. 45
  5. 99
  6. 15
  7. 60
  8. 99
  9. 69
  10. 34
  11. 7
  12. 69
  13. 28
  14. 21
  15. 24
  16. 99
  17. 24
  18. 84
  19. 28
  20. 78
  21. 12
  22. 86
  23. 93
  24. 74
  25. 87
  26. 72
  27. 54
  28. 50
  29. 22
  30. 3
  31. 60
  32. 56
  33. 16
  34. 65
  35. 22
  36. 24
  37. 25
  38. 59
  39. 45
  40. 42

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