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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 415 · 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: 79, 47, 94, 2? (a) 79 (b) 47 (c) 94 (d) 2
  2. 2.Which number is the odd one out: 19, 18, 78, 99? (a) 19 (b) 18 (c) 78 (d) 99
  3. 3.Which number is the odd one out: 86, 75, 26, 58? (a) 86 (b) 75 (c) 26 (d) 58
  4. 4.Which number is the odd one out: 5, 90, 67, 13? (a) 5 (b) 90 (c) 67 (d) 13
  5. 5.Which number is the odd one out: 85, 55, 72, 90? (a) 85 (b) 55 (c) 72 (d) 90
  6. 6.Which number is the odd one out: 37, 79, 88, 97? (a) 37 (b) 79 (c) 88 (d) 97
  7. 7.Which number is the odd one out: 18, 47, 3, 53? (a) 18 (b) 47 (c) 3 (d) 53
  8. 8.Which number is the odd one out: 19, 89, 8, 11? (a) 19 (b) 89 (c) 8 (d) 11
  9. 9.Which number is the odd one out: 29, 5, 2, 30? (a) 29 (b) 5 (c) 2 (d) 30
  10. 10.Which number is the odd one out: 67, 18, 2, 89? (a) 67 (b) 18 (c) 2 (d) 89
  11. 11.Which number is the odd one out: 4, 61, 17, 11? (a) 4 (b) 61 (c) 17 (d) 11
  12. 12.Which number is the odd one out: 29, 43, 18, 59? (a) 29 (b) 43 (c) 18 (d) 59
  13. 13.Which number is the odd one out: 53, 37, 24, 41? (a) 53 (b) 37 (c) 24 (d) 41
  14. 14.Which number is the odd one out: 87, 71, 19, 90? (a) 87 (b) 71 (c) 19 (d) 90
  15. 15.Which number is the odd one out: 18, 20, 96, 80? (a) 18 (b) 20 (c) 96 (d) 80
  16. 16.Which number is the odd one out: 18, 66, 54, 20? (a) 18 (b) 66 (c) 54 (d) 20
  17. 17.Which number is the odd one out: 73, 5, 17, 65? (a) 73 (b) 5 (c) 17 (d) 65
  18. 18.Which number is the odd one out: 17, 97, 59, 12? (a) 17 (b) 97 (c) 59 (d) 12
  19. 19.Which number is the odd one out: 88, 2, 24, 48? (a) 88 (b) 2 (c) 24 (d) 48
  20. 20.Which number is the odd one out: 37, 73, 17, 56? (a) 37 (b) 73 (c) 17 (d) 56
  21. 21.Which number is the odd one out: 81, 9, 91, 99? (a) 81 (b) 9 (c) 91 (d) 99
  22. 22.Which number is the odd one out: 90, 5, 13, 3? (a) 90 (b) 5 (c) 13 (d) 3
  23. 23.Which number is the odd one out: 79, 41, 69, 59? (a) 79 (b) 41 (c) 69 (d) 59
  24. 24.Which number is the odd one out: 10, 20, 97, 76? (a) 10 (b) 20 (c) 97 (d) 76
  25. 25.Which number is the odd one out: 35, 7, 5, 36? (a) 35 (b) 7 (c) 5 (d) 36
  26. 26.Which number is the odd one out: 47, 29, 77, 71? (a) 47 (b) 29 (c) 77 (d) 71
  27. 27.Which number is the odd one out: 77, 98, 91, 26? (a) 77 (b) 98 (c) 91 (d) 26
  28. 28.Which number is the odd one out: 64, 67, 47, 53? (a) 64 (b) 67 (c) 47 (d) 53
  29. 29.Which number is the odd one out: 17, 90, 73, 41? (a) 17 (b) 90 (c) 73 (d) 41
  30. 30.Which number is the odd one out: 89, 20, 53, 23? (a) 89 (b) 20 (c) 53 (d) 23
  31. 31.Which number is the odd one out: 15, 43, 96, 5? (a) 15 (b) 43 (c) 96 (d) 5
  32. 32.Which number is the odd one out: 23, 61, 17, 35? (a) 23 (b) 61 (c) 17 (d) 35
  33. 33.Which number is the odd one out: 61, 83, 79, 76? (a) 61 (b) 83 (c) 79 (d) 76
  34. 34.Which number is the odd one out: 83, 53, 73, 95? (a) 83 (b) 53 (c) 73 (d) 95
  35. 35.Which number is the odd one out: 73, 47, 24, 17? (a) 73 (b) 47 (c) 24 (d) 17
  36. 36.Which number is the odd one out: 96, 37, 79, 2? (a) 96 (b) 37 (c) 79 (d) 2
  37. 37.Which number is the odd one out: 13, 68, 53, 31? (a) 13 (b) 68 (c) 53 (d) 31
  38. 38.Which number is the odd one out: 41, 2, 11, 34? (a) 41 (b) 2 (c) 11 (d) 34
  39. 39.Which number is the odd one out: 67, 11, 59, 92? (a) 67 (b) 11 (c) 59 (d) 92
  40. 40.Which number is the odd one out: 11, 43, 19, 80? (a) 11 (b) 43 (c) 19 (d) 80

Answer key

  1. 94
  2. 19
  3. 75
  4. 90
  5. 72
  6. 88
  7. 18
  8. 8
  9. 30
  10. 18
  11. 4
  12. 18
  13. 24
  14. 90
  15. 18
  16. 20
  17. 65
  18. 12
  19. 2
  20. 56
  21. 91
  22. 90
  23. 69
  24. 97
  25. 36
  26. 77
  27. 26
  28. 64
  29. 90
  30. 20
  31. 96
  32. 35
  33. 76
  34. 95
  35. 24
  36. 96
  37. 68
  38. 34
  39. 92
  40. 80

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