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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 115 · 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: 27, 81, 28, 9? (a) 27 (b) 81 (c) 28 (d) 9
  2. 2.Which number is the odd one out: 66, 11, 13, 89? (a) 66 (b) 11 (c) 13 (d) 89
  3. 3.Which number is the odd one out: 66, 43, 53, 71? (a) 66 (b) 43 (c) 53 (d) 71
  4. 4.Which number is the odd one out: 96, 78, 79, 24? (a) 96 (b) 78 (c) 79 (d) 24
  5. 5.Which number is the odd one out: 19, 74, 47, 61? (a) 19 (b) 74 (c) 47 (d) 61
  6. 6.Which number is the odd one out: 47, 89, 90, 79? (a) 47 (b) 89 (c) 90 (d) 79
  7. 7.Which number is the odd one out: 23, 46, 89, 97? (a) 23 (b) 46 (c) 89 (d) 97
  8. 8.Which number is the odd one out: 3, 2, 6, 71? (a) 3 (b) 2 (c) 6 (d) 71
  9. 9.Which number is the odd one out: 54, 90, 18, 15? (a) 54 (b) 90 (c) 18 (d) 15
  10. 10.Which number is the odd one out: 21, 91, 9, 77? (a) 21 (b) 91 (c) 9 (d) 77
  11. 11.Which number is the odd one out: 79, 49, 17, 61? (a) 79 (b) 49 (c) 17 (d) 61
  12. 12.Which number is the odd one out: 53, 6, 3, 37? (a) 53 (b) 6 (c) 3 (d) 37
  13. 13.Which number is the odd one out: 40, 88, 25, 8? (a) 40 (b) 88 (c) 25 (d) 8
  14. 14.Which number is the odd one out: 31, 8, 71, 89? (a) 31 (b) 8 (c) 71 (d) 89
  15. 15.Which number is the odd one out: 17, 32, 19, 13? (a) 17 (b) 32 (c) 19 (d) 13
  16. 16.Which number is the odd one out: 8, 32, 84, 56? (a) 8 (b) 32 (c) 84 (d) 56
  17. 17.Which number is the odd one out: 5, 19, 47, 45? (a) 5 (b) 19 (c) 47 (d) 45
  18. 18.Which number is the odd one out: 8, 18, 72, 66? (a) 8 (b) 18 (c) 72 (d) 66
  19. 19.Which number is the odd one out: 53, 11, 54, 59? (a) 53 (b) 11 (c) 54 (d) 59
  20. 20.Which number is the odd one out: 41, 29, 70, 2? (a) 41 (b) 29 (c) 70 (d) 2
  21. 21.Which number is the odd one out: 66, 13, 79, 29? (a) 66 (b) 13 (c) 79 (d) 29
  22. 22.Which number is the odd one out: 71, 89, 37, 38? (a) 71 (b) 89 (c) 37 (d) 38
  23. 23.Which number is the odd one out: 95, 61, 23, 31? (a) 95 (b) 61 (c) 23 (d) 31
  24. 24.Which number is the odd one out: 48, 53, 71, 89? (a) 48 (b) 53 (c) 71 (d) 89
  25. 25.Which number is the odd one out: 64, 88, 86, 16? (a) 64 (b) 88 (c) 86 (d) 16
  26. 26.Which number is the odd one out: 53, 6, 61, 83? (a) 53 (b) 6 (c) 61 (d) 83
  27. 27.Which number is the odd one out: 97, 31, 71, 8? (a) 97 (b) 31 (c) 71 (d) 8
  28. 28.Which number is the odd one out: 4, 79, 67, 17? (a) 4 (b) 79 (c) 67 (d) 17
  29. 29.Which number is the odd one out: 41, 47, 51, 13? (a) 41 (b) 47 (c) 51 (d) 13
  30. 30.Which number is the odd one out: 54, 34, 96, 72? (a) 54 (b) 34 (c) 96 (d) 72
  31. 31.Which number is the odd one out: 67, 48, 19, 37? (a) 67 (b) 48 (c) 19 (d) 37
  32. 32.Which number is the odd one out: 67, 63, 17, 79? (a) 67 (b) 63 (c) 17 (d) 79
  33. 33.Which number is the odd one out: 18, 54, 72, 48? (a) 18 (b) 54 (c) 72 (d) 48
  34. 34.Which number is the odd one out: 97, 57, 24, 17? (a) 97 (b) 57 (c) 24 (d) 17
  35. 35.Which number is the odd one out: 51, 27, 81, 9? (a) 51 (b) 27 (c) 81 (d) 9
  36. 36.Which number is the odd one out: 87, 93, 40, 55? (a) 87 (b) 93 (c) 40 (d) 55
  37. 37.Which number is the odd one out: 18, 78, 79, 54? (a) 18 (b) 78 (c) 79 (d) 54
  38. 38.Which number is the odd one out: 98, 28, 51, 68? (a) 98 (b) 28 (c) 51 (d) 68
  39. 39.Which number is the odd one out: 47, 37, 5, 10? (a) 47 (b) 37 (c) 5 (d) 10
  40. 40.Which number is the odd one out: 16, 30, 64, 88? (a) 16 (b) 30 (c) 64 (d) 88

Answer key

  1. 28
  2. 66
  3. 66
  4. 79
  5. 74
  6. 90
  7. 46
  8. 6
  9. 15
  10. 9
  11. 49
  12. 6
  13. 25
  14. 8
  15. 32
  16. 84
  17. 45
  18. 8
  19. 54
  20. 70
  21. 66
  22. 38
  23. 95
  24. 48
  25. 86
  26. 6
  27. 8
  28. 4
  29. 51
  30. 34
  31. 48
  32. 63
  33. 48
  34. 24
  35. 51
  36. 40
  37. 79
  38. 51
  39. 10
  40. 30

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