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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 390 · 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: 29, 79, 10, 53? (a) 29 (b) 79 (c) 10 (d) 53
  2. 2.Which number is the odd one out: 2, 66, 83, 97? (a) 2 (b) 66 (c) 83 (d) 97
  3. 3.Which number is the odd one out: 52, 85, 57, 15? (a) 52 (b) 85 (c) 57 (d) 15
  4. 4.Which number is the odd one out: 2, 43, 68, 11? (a) 2 (b) 43 (c) 68 (d) 11
  5. 5.Which number is the odd one out: 53, 59, 8, 23? (a) 53 (b) 59 (c) 8 (d) 23
  6. 6.Which number is the odd one out: 19, 73, 8, 47? (a) 19 (b) 73 (c) 8 (d) 47
  7. 7.Which number is the odd one out: 31, 53, 40, 23? (a) 31 (b) 53 (c) 40 (d) 23
  8. 8.Which number is the odd one out: 61, 41, 88, 11? (a) 61 (b) 41 (c) 88 (d) 11
  9. 9.Which number is the odd one out: 62, 89, 74, 34? (a) 62 (b) 89 (c) 74 (d) 34
  10. 10.Which number is the odd one out: 62, 47, 13, 11? (a) 62 (b) 47 (c) 13 (d) 11
  11. 11.Which number is the odd one out: 47, 67, 66, 17? (a) 47 (b) 67 (c) 66 (d) 17
  12. 12.Which number is the odd one out: 79, 2, 29, 62? (a) 79 (b) 2 (c) 29 (d) 62
  13. 13.Which number is the odd one out: 39, 3, 38, 79? (a) 39 (b) 3 (c) 38 (d) 79
  14. 14.Which number is the odd one out: 91, 19, 98, 29? (a) 91 (b) 19 (c) 98 (d) 29
  15. 15.Which number is the odd one out: 70, 35, 69, 14? (a) 70 (b) 35 (c) 69 (d) 14
  16. 16.Which number is the odd one out: 67, 89, 71, 90? (a) 67 (b) 89 (c) 71 (d) 90
  17. 17.Which number is the odd one out: 95, 74, 38, 22? (a) 95 (b) 74 (c) 38 (d) 22
  18. 18.Which number is the odd one out: 13, 61, 29, 81? (a) 13 (b) 61 (c) 29 (d) 81
  19. 19.Which number is the odd one out: 2, 14, 29, 17? (a) 2 (b) 14 (c) 29 (d) 17
  20. 20.Which number is the odd one out: 17, 59, 27, 97? (a) 17 (b) 59 (c) 27 (d) 97
  21. 21.Which number is the odd one out: 61, 43, 94, 37? (a) 61 (b) 43 (c) 94 (d) 37
  22. 22.Which number is the odd one out: 2, 29, 11, 72? (a) 2 (b) 29 (c) 11 (d) 72
  23. 23.Which number is the odd one out: 58, 43, 71, 83? (a) 58 (b) 43 (c) 71 (d) 83
  24. 24.Which number is the odd one out: 61, 29, 70, 2? (a) 61 (b) 29 (c) 70 (d) 2
  25. 25.Which number is the odd one out: 29, 77, 83, 97? (a) 29 (b) 77 (c) 83 (d) 97
  26. 26.Which number is the odd one out: 73, 40, 97, 11? (a) 73 (b) 40 (c) 97 (d) 11
  27. 27.Which number is the odd one out: 67, 53, 47, 52? (a) 67 (b) 53 (c) 47 (d) 52
  28. 28.Which number is the odd one out: 76, 67, 19, 53? (a) 76 (b) 67 (c) 19 (d) 53
  29. 29.Which number is the odd one out: 29, 73, 4, 71? (a) 29 (b) 73 (c) 4 (d) 71
  30. 30.Which number is the odd one out: 13, 15, 3, 83? (a) 13 (b) 15 (c) 3 (d) 83
  31. 31.Which number is the odd one out: 31, 89, 64, 29? (a) 31 (b) 89 (c) 64 (d) 29
  32. 32.Which number is the odd one out: 3, 66, 31, 71? (a) 3 (b) 66 (c) 31 (d) 71
  33. 33.Which number is the odd one out: 95, 34, 85, 65? (a) 95 (b) 34 (c) 85 (d) 65
  34. 34.Which number is the odd one out: 41, 17, 88, 29? (a) 41 (b) 17 (c) 88 (d) 29
  35. 35.Which number is the odd one out: 98, 14, 77, 27? (a) 98 (b) 14 (c) 77 (d) 27
  36. 36.Which number is the odd one out: 19, 85, 79, 13? (a) 19 (b) 85 (c) 79 (d) 13
  37. 37.Which number is the odd one out: 57, 11, 59, 78? (a) 57 (b) 11 (c) 59 (d) 78
  38. 38.Which number is the odd one out: 10, 43, 71, 17? (a) 10 (b) 43 (c) 71 (d) 17
  39. 39.Which number is the odd one out: 97, 71, 29, 16? (a) 97 (b) 71 (c) 29 (d) 16
  40. 40.Which number is the odd one out: 9, 30, 81, 45? (a) 9 (b) 30 (c) 81 (d) 45

Answer key

  1. 10
  2. 66
  3. 52
  4. 68
  5. 8
  6. 8
  7. 40
  8. 88
  9. 89
  10. 62
  11. 66
  12. 62
  13. 38
  14. 98
  15. 69
  16. 90
  17. 95
  18. 81
  19. 14
  20. 27
  21. 94
  22. 72
  23. 58
  24. 70
  25. 77
  26. 40
  27. 52
  28. 76
  29. 4
  30. 15
  31. 64
  32. 66
  33. 34
  34. 88
  35. 27
  36. 85
  37. 78
  38. 10
  39. 16
  40. 30

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