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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 911 · 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: 31, 73, 13, 77? (a) 31 (b) 73 (c) 13 (d) 77
  2. 2.Which number is the odd one out: 2, 43, 13, 88? (a) 2 (b) 43 (c) 13 (d) 88
  3. 3.Which number is the odd one out: 16, 80, 9, 81? (a) 16 (b) 80 (c) 9 (d) 81
  4. 4.Which number is the odd one out: 71, 79, 7, 63? (a) 71 (b) 79 (c) 7 (d) 63
  5. 5.Which number is the odd one out: 81, 9, 89, 27? (a) 81 (b) 9 (c) 89 (d) 27
  6. 6.Which number is the odd one out: 13, 7, 63, 79? (a) 13 (b) 7 (c) 63 (d) 79
  7. 7.Which number is the odd one out: 98, 77, 91, 86? (a) 98 (b) 77 (c) 91 (d) 86
  8. 8.Which number is the odd one out: 79, 61, 18, 29? (a) 79 (b) 61 (c) 18 (d) 29
  9. 9.Which number is the odd one out: 64, 73, 67, 97? (a) 64 (b) 73 (c) 67 (d) 97
  10. 10.Which number is the odd one out: 45, 72, 96, 24? (a) 45 (b) 72 (c) 96 (d) 24
  11. 11.Which number is the odd one out: 95, 96, 85, 40? (a) 95 (b) 96 (c) 85 (d) 40
  12. 12.Which number is the odd one out: 35, 28, 86, 76? (a) 35 (b) 28 (c) 86 (d) 76
  13. 13.Which number is the odd one out: 29, 52, 76, 22? (a) 29 (b) 52 (c) 76 (d) 22
  14. 14.Which number is the odd one out: 6, 33, 79, 11? (a) 6 (b) 33 (c) 79 (d) 11
  15. 15.Which number is the odd one out: 88, 80, 55, 76? (a) 88 (b) 80 (c) 55 (d) 76
  16. 16.Which number is the odd one out: 79, 36, 61, 11? (a) 79 (b) 36 (c) 61 (d) 11
  17. 17.Which number is the odd one out: 67, 31, 90, 17? (a) 67 (b) 31 (c) 90 (d) 17
  18. 18.Which number is the odd one out: 32, 59, 48, 96? (a) 32 (b) 59 (c) 48 (d) 96
  19. 19.Which number is the odd one out: 16, 64, 8, 14? (a) 16 (b) 64 (c) 8 (d) 14
  20. 20.Which number is the odd one out: 19, 29, 43, 20? (a) 19 (b) 29 (c) 43 (d) 20
  21. 21.Which number is the odd one out: 96, 66, 27, 72? (a) 96 (b) 66 (c) 27 (d) 72
  22. 22.Which number is the odd one out: 17, 23, 71, 77? (a) 17 (b) 23 (c) 71 (d) 77
  23. 23.Which number is the odd one out: 88, 8, 32, 9? (a) 88 (b) 8 (c) 32 (d) 9
  24. 24.Which number is the odd one out: 20, 11, 23, 19? (a) 20 (b) 11 (c) 23 (d) 19
  25. 25.Which number is the odd one out: 3, 69, 52, 23? (a) 3 (b) 69 (c) 52 (d) 23
  26. 26.Which number is the odd one out: 43, 13, 99, 97? (a) 43 (b) 13 (c) 99 (d) 97
  27. 27.Which number is the odd one out: 73, 71, 60, 3? (a) 73 (b) 71 (c) 60 (d) 3
  28. 28.Which number is the odd one out: 77, 23, 7, 13? (a) 77 (b) 23 (c) 7 (d) 13
  29. 29.Which number is the odd one out: 6, 70, 24, 96? (a) 6 (b) 70 (c) 24 (d) 96
  30. 30.Which number is the odd one out: 79, 61, 35, 41? (a) 79 (b) 61 (c) 35 (d) 41
  31. 31.Which number is the odd one out: 23, 81, 9, 99? (a) 23 (b) 81 (c) 9 (d) 99
  32. 32.Which number is the odd one out: 13, 85, 67, 5? (a) 13 (b) 85 (c) 67 (d) 5
  33. 33.Which number is the odd one out: 47, 95, 53, 59? (a) 47 (b) 95 (c) 53 (d) 59
  34. 34.Which number is the odd one out: 32, 90, 68, 88? (a) 32 (b) 90 (c) 68 (d) 88
  35. 35.Which number is the odd one out: 78, 66, 6, 21? (a) 78 (b) 66 (c) 6 (d) 21
  36. 36.Which number is the odd one out: 90, 99, 18, 65? (a) 90 (b) 99 (c) 18 (d) 65
  37. 37.Which number is the odd one out: 89, 27, 73, 59? (a) 89 (b) 27 (c) 73 (d) 59
  38. 38.Which number is the odd one out: 8, 91, 96, 48? (a) 8 (b) 91 (c) 96 (d) 48
  39. 39.Which number is the odd one out: 23, 13, 89, 8? (a) 23 (b) 13 (c) 89 (d) 8
  40. 40.Which number is the odd one out: 13, 73, 38, 97? (a) 13 (b) 73 (c) 38 (d) 97

Answer key

  1. 77
  2. 88
  3. 80
  4. 63
  5. 89
  6. 63
  7. 86
  8. 18
  9. 64
  10. 45
  11. 96
  12. 35
  13. 29
  14. 6
  15. 55
  16. 36
  17. 90
  18. 59
  19. 14
  20. 20
  21. 27
  22. 77
  23. 9
  24. 20
  25. 52
  26. 99
  27. 60
  28. 77
  29. 70
  30. 35
  31. 23
  32. 85
  33. 95
  34. 90
  35. 21
  36. 65
  37. 27
  38. 91
  39. 8
  40. 38

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