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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 355 · 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: 32, 50, 55, 85? (a) 32 (b) 50 (c) 55 (d) 85
  2. 2.Which number is the odd one out: 87, 72, 31, 13? (a) 87 (b) 72 (c) 31 (d) 13
  3. 3.Which number is the odd one out: 78, 30, 45, 54? (a) 78 (b) 30 (c) 45 (d) 54
  4. 4.Which number is the odd one out: 19, 88, 68, 8? (a) 19 (b) 88 (c) 68 (d) 8
  5. 5.Which number is the odd one out: 11, 79, 18, 99? (a) 11 (b) 79 (c) 18 (d) 99
  6. 6.Which number is the odd one out: 97, 42, 17, 11? (a) 97 (b) 42 (c) 17 (d) 11
  7. 7.Which number is the odd one out: 59, 31, 58, 11? (a) 59 (b) 31 (c) 58 (d) 11
  8. 8.Which number is the odd one out: 36, 88, 32, 16? (a) 36 (b) 88 (c) 32 (d) 16
  9. 9.Which number is the odd one out: 96, 8, 24, 7? (a) 96 (b) 8 (c) 24 (d) 7
  10. 10.Which number is the odd one out: 64, 59, 16, 4? (a) 64 (b) 59 (c) 16 (d) 4
  11. 11.Which number is the odd one out: 67, 69, 89, 29? (a) 67 (b) 69 (c) 89 (d) 29
  12. 12.Which number is the odd one out: 48, 10, 80, 30? (a) 48 (b) 10 (c) 80 (d) 30
  13. 13.Which number is the odd one out: 80, 81, 20, 8? (a) 80 (b) 81 (c) 20 (d) 8
  14. 14.Which number is the odd one out: 95, 73, 31, 97? (a) 95 (b) 73 (c) 31 (d) 97
  15. 15.Which number is the odd one out: 48, 19, 53, 17? (a) 48 (b) 19 (c) 53 (d) 17
  16. 16.Which number is the odd one out: 96, 23, 32, 48? (a) 96 (b) 23 (c) 32 (d) 48
  17. 17.Which number is the odd one out: 3, 17, 71, 39? (a) 3 (b) 17 (c) 71 (d) 39
  18. 18.Which number is the odd one out: 76, 11, 52, 26? (a) 76 (b) 11 (c) 52 (d) 26
  19. 19.Which number is the odd one out: 27, 59, 97, 47? (a) 27 (b) 59 (c) 97 (d) 47
  20. 20.Which number is the odd one out: 80, 23, 20, 40? (a) 80 (b) 23 (c) 20 (d) 40
  21. 21.Which number is the odd one out: 96, 66, 25, 48? (a) 96 (b) 66 (c) 25 (d) 48
  22. 22.Which number is the odd one out: 89, 12, 61, 51? (a) 89 (b) 12 (c) 61 (d) 51
  23. 23.Which number is the odd one out: 62, 24, 8, 48? (a) 62 (b) 24 (c) 8 (d) 48
  24. 24.Which number is the odd one out: 67, 31, 61, 46? (a) 67 (b) 31 (c) 61 (d) 46
  25. 25.Which number is the odd one out: 2, 14, 17, 89? (a) 2 (b) 14 (c) 17 (d) 89
  26. 26.Which number is the odd one out: 15, 18, 30, 75? (a) 15 (b) 18 (c) 30 (d) 75
  27. 27.Which number is the odd one out: 75, 53, 31, 83? (a) 75 (b) 53 (c) 31 (d) 83
  28. 28.Which number is the odd one out: 59, 23, 73, 66? (a) 59 (b) 23 (c) 73 (d) 66
  29. 29.Which number is the odd one out: 25, 37, 29, 47? (a) 25 (b) 37 (c) 29 (d) 47
  30. 30.Which number is the odd one out: 43, 18, 24, 72? (a) 43 (b) 18 (c) 24 (d) 72
  31. 31.Which number is the odd one out: 50, 53, 10, 26? (a) 50 (b) 53 (c) 10 (d) 26
  32. 32.Which number is the odd one out: 5, 20, 79, 53? (a) 5 (b) 20 (c) 79 (d) 53
  33. 33.Which number is the odd one out: 36, 64, 72, 37? (a) 36 (b) 64 (c) 72 (d) 37
  34. 34.Which number is the odd one out: 90, 99, 45, 24? (a) 90 (b) 99 (c) 45 (d) 24
  35. 35.Which number is the odd one out: 61, 64, 8, 16? (a) 61 (b) 64 (c) 8 (d) 16
  36. 36.Which number is the odd one out: 59, 17, 61, 39? (a) 59 (b) 17 (c) 61 (d) 39
  37. 37.Which number is the odd one out: 54, 72, 48, 18? (a) 54 (b) 72 (c) 48 (d) 18
  38. 38.Which number is the odd one out: 3, 61, 29, 21? (a) 3 (b) 61 (c) 29 (d) 21
  39. 39.Which number is the odd one out: 73, 11, 63, 89? (a) 73 (b) 11 (c) 63 (d) 89
  40. 40.Which number is the odd one out: 91, 37, 13, 41? (a) 91 (b) 37 (c) 13 (d) 41

Answer key

  1. 32
  2. 72
  3. 45
  4. 19
  5. 18
  6. 42
  7. 58
  8. 36
  9. 7
  10. 59
  11. 69
  12. 48
  13. 81
  14. 95
  15. 48
  16. 23
  17. 39
  18. 11
  19. 27
  20. 23
  21. 25
  22. 12
  23. 62
  24. 46
  25. 14
  26. 18
  27. 75
  28. 66
  29. 25
  30. 43
  31. 53
  32. 20
  33. 37
  34. 24
  35. 61
  36. 39
  37. 48
  38. 21
  39. 63
  40. 91

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