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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 360 · 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: 13, 71, 11, 6? (a) 13 (b) 71 (c) 11 (d) 6
  2. 2.Which number is the odd one out: 25, 16, 55, 64? (a) 25 (b) 16 (c) 55 (d) 64
  3. 3.Which number is the odd one out: 49, 77, 81, 63? (a) 49 (b) 77 (c) 81 (d) 63
  4. 4.Which number is the odd one out: 31, 71, 63, 89? (a) 31 (b) 71 (c) 63 (d) 89
  5. 5.Which number is the odd one out: 9, 27, 68, 81? (a) 9 (b) 27 (c) 68 (d) 81
  6. 6.Which number is the odd one out: 16, 88, 64, 66? (a) 16 (b) 88 (c) 64 (d) 66
  7. 7.Which number is the odd one out: 29, 18, 48, 72? (a) 29 (b) 18 (c) 48 (d) 72
  8. 8.Which number is the odd one out: 97, 69, 71, 13? (a) 97 (b) 69 (c) 71 (d) 13
  9. 9.Which number is the odd one out: 6, 66, 8, 24? (a) 6 (b) 66 (c) 8 (d) 24
  10. 10.Which number is the odd one out: 73, 37, 44, 89? (a) 73 (b) 37 (c) 44 (d) 89
  11. 11.Which number is the odd one out: 42, 16, 64, 56? (a) 42 (b) 16 (c) 64 (d) 56
  12. 12.Which number is the odd one out: 19, 84, 21, 12? (a) 19 (b) 84 (c) 21 (d) 12
  13. 13.Which number is the odd one out: 59, 87, 48, 89? (a) 59 (b) 87 (c) 48 (d) 89
  14. 14.Which number is the odd one out: 43, 2, 88, 59? (a) 43 (b) 2 (c) 88 (d) 59
  15. 15.Which number is the odd one out: 67, 29, 40, 61? (a) 67 (b) 29 (c) 40 (d) 61
  16. 16.Which number is the odd one out: 71, 89, 13, 85? (a) 71 (b) 89 (c) 13 (d) 85
  17. 17.Which number is the odd one out: 78, 96, 77, 24? (a) 78 (b) 96 (c) 77 (d) 24
  18. 18.Which number is the odd one out: 13, 80, 83, 37? (a) 13 (b) 80 (c) 83 (d) 37
  19. 19.Which number is the odd one out: 47, 74, 73, 37? (a) 47 (b) 74 (c) 73 (d) 37
  20. 20.Which number is the odd one out: 25, 88, 80, 32? (a) 25 (b) 88 (c) 80 (d) 32
  21. 21.Which number is the odd one out: 73, 99, 3, 43? (a) 73 (b) 99 (c) 3 (d) 43
  22. 22.Which number is the odd one out: 36, 8, 64, 96? (a) 36 (b) 8 (c) 64 (d) 96
  23. 23.Which number is the odd one out: 35, 23, 7, 11? (a) 35 (b) 23 (c) 7 (d) 11
  24. 24.Which number is the odd one out: 20, 5, 2, 79? (a) 20 (b) 5 (c) 2 (d) 79
  25. 25.Which number is the odd one out: 99, 9, 81, 77? (a) 99 (b) 9 (c) 81 (d) 77
  26. 26.Which number is the odd one out: 60, 24, 64, 25? (a) 60 (b) 24 (c) 64 (d) 25
  27. 27.Which number is the odd one out: 71, 2, 43, 72? (a) 71 (b) 2 (c) 43 (d) 72
  28. 28.Which number is the odd one out: 13, 74, 79, 31? (a) 13 (b) 74 (c) 79 (d) 31
  29. 29.Which number is the odd one out: 43, 83, 28, 23? (a) 43 (b) 83 (c) 28 (d) 23
  30. 30.Which number is the odd one out: 79, 37, 66, 73? (a) 79 (b) 37 (c) 66 (d) 73
  31. 31.Which number is the odd one out: 95, 83, 43, 60? (a) 95 (b) 83 (c) 43 (d) 60
  32. 32.Which number is the odd one out: 19, 4, 71, 43? (a) 19 (b) 4 (c) 71 (d) 43
  33. 33.Which number is the odd one out: 77, 16, 49, 56? (a) 77 (b) 16 (c) 49 (d) 56
  34. 34.Which number is the odd one out: 8, 37, 59, 2? (a) 8 (b) 37 (c) 59 (d) 2
  35. 35.Which number is the odd one out: 14, 23, 47, 11? (a) 14 (b) 23 (c) 47 (d) 11
  36. 36.Which number is the odd one out: 89, 33, 42, 41? (a) 89 (b) 33 (c) 42 (d) 41
  37. 37.Which number is the odd one out: 89, 2, 43, 90? (a) 89 (b) 2 (c) 43 (d) 90
  38. 38.Which number is the odd one out: 40, 88, 32, 15? (a) 40 (b) 88 (c) 32 (d) 15
  39. 39.Which number is the odd one out: 79, 97, 2, 56? (a) 79 (b) 97 (c) 2 (d) 56
  40. 40.Which number is the odd one out: 13, 17, 51, 67? (a) 13 (b) 17 (c) 51 (d) 67

Answer key

  1. 6
  2. 55
  3. 81
  4. 63
  5. 68
  6. 66
  7. 29
  8. 69
  9. 8
  10. 44
  11. 42
  12. 19
  13. 48
  14. 88
  15. 40
  16. 85
  17. 77
  18. 80
  19. 74
  20. 25
  21. 99
  22. 36
  23. 35
  24. 20
  25. 77
  26. 25
  27. 72
  28. 74
  29. 28
  30. 66
  31. 60
  32. 4
  33. 16
  34. 8
  35. 14
  36. 42
  37. 90
  38. 15
  39. 56
  40. 51

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