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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 501 · 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: 41, 66, 19, 2? (a) 41 (b) 66 (c) 19 (d) 2
  2. 2.Which number is the odd one out: 73, 97, 10, 2? (a) 73 (b) 97 (c) 10 (d) 2
  3. 3.Which number is the odd one out: 74, 2, 83, 13? (a) 74 (b) 2 (c) 83 (d) 13
  4. 4.Which number is the odd one out: 42, 91, 17, 13? (a) 42 (b) 91 (c) 17 (d) 13
  5. 5.Which number is the odd one out: 43, 84, 3, 17? (a) 43 (b) 84 (c) 3 (d) 17
  6. 6.Which number is the odd one out: 53, 43, 30, 69? (a) 53 (b) 43 (c) 30 (d) 69
  7. 7.Which number is the odd one out: 23, 48, 24, 87? (a) 23 (b) 48 (c) 24 (d) 87
  8. 8.Which number is the odd one out: 19, 74, 2, 67? (a) 19 (b) 74 (c) 2 (d) 67
  9. 9.Which number is the odd one out: 31, 15, 59, 71? (a) 31 (b) 15 (c) 59 (d) 71
  10. 10.Which number is the odd one out: 8, 42, 32, 56? (a) 8 (b) 42 (c) 32 (d) 56
  11. 11.Which number is the odd one out: 11, 96, 17, 37? (a) 11 (b) 96 (c) 17 (d) 37
  12. 12.Which number is the odd one out: 19, 97, 8, 61? (a) 19 (b) 97 (c) 8 (d) 61
  13. 13.Which number is the odd one out: 73, 58, 61, 23? (a) 73 (b) 58 (c) 61 (d) 23
  14. 14.Which number is the odd one out: 23, 56, 71, 41? (a) 23 (b) 56 (c) 71 (d) 41
  15. 15.Which number is the odd one out: 87, 76, 29, 3? (a) 87 (b) 76 (c) 29 (d) 3
  16. 16.Which number is the odd one out: 90, 84, 28, 98? (a) 90 (b) 84 (c) 28 (d) 98
  17. 17.Which number is the odd one out: 71, 39, 19, 13? (a) 71 (b) 39 (c) 19 (d) 13
  18. 18.Which number is the odd one out: 96, 21, 24, 84? (a) 96 (b) 21 (c) 24 (d) 84
  19. 19.Which number is the odd one out: 90, 72, 40, 78? (a) 90 (b) 72 (c) 40 (d) 78
  20. 20.Which number is the odd one out: 19, 59, 61, 50? (a) 19 (b) 59 (c) 61 (d) 50
  21. 21.Which number is the odd one out: 53, 61, 89, 44? (a) 53 (b) 61 (c) 89 (d) 44
  22. 22.Which number is the odd one out: 43, 23, 41, 25? (a) 43 (b) 23 (c) 41 (d) 25
  23. 23.Which number is the odd one out: 63, 86, 22, 34? (a) 63 (b) 86 (c) 22 (d) 34
  24. 24.Which number is the odd one out: 75, 11, 37, 19? (a) 75 (b) 11 (c) 37 (d) 19
  25. 25.Which number is the odd one out: 11, 89, 7, 42? (a) 11 (b) 89 (c) 7 (d) 42
  26. 26.Which number is the odd one out: 53, 31, 3, 42? (a) 53 (b) 31 (c) 3 (d) 42
  27. 27.Which number is the odd one out: 88, 64, 16, 17? (a) 88 (b) 64 (c) 16 (d) 17
  28. 28.Which number is the odd one out: 71, 37, 61, 72? (a) 71 (b) 37 (c) 61 (d) 72
  29. 29.Which number is the odd one out: 24, 54, 48, 96? (a) 24 (b) 54 (c) 48 (d) 96
  30. 30.Which number is the odd one out: 79, 33, 19, 78? (a) 79 (b) 33 (c) 19 (d) 78
  31. 31.Which number is the odd one out: 91, 36, 77, 49? (a) 91 (b) 36 (c) 77 (d) 49
  32. 32.Which number is the odd one out: 3, 89, 90, 2? (a) 3 (b) 89 (c) 90 (d) 2
  33. 33.Which number is the odd one out: 73, 28, 29, 67? (a) 73 (b) 28 (c) 29 (d) 67
  34. 34.Which number is the odd one out: 16, 47, 67, 97? (a) 16 (b) 47 (c) 67 (d) 97
  35. 35.Which number is the odd one out: 31, 30, 19, 57? (a) 31 (b) 30 (c) 19 (d) 57
  36. 36.Which number is the odd one out: 13, 47, 59, 9? (a) 13 (b) 47 (c) 59 (d) 9
  37. 37.Which number is the odd one out: 4, 80, 9, 81? (a) 4 (b) 80 (c) 9 (d) 81
  38. 38.Which number is the odd one out: 78, 30, 69, 55? (a) 78 (b) 30 (c) 69 (d) 55
  39. 39.Which number is the odd one out: 51, 8, 3, 11? (a) 51 (b) 8 (c) 3 (d) 11
  40. 40.Which number is the odd one out: 95, 29, 31, 40? (a) 95 (b) 29 (c) 31 (d) 40

Answer key

  1. 66
  2. 10
  3. 74
  4. 42
  5. 84
  6. 30
  7. 23
  8. 74
  9. 15
  10. 42
  11. 96
  12. 8
  13. 58
  14. 56
  15. 76
  16. 90
  17. 39
  18. 21
  19. 40
  20. 50
  21. 44
  22. 25
  23. 63
  24. 75
  25. 42
  26. 42
  27. 17
  28. 72
  29. 54
  30. 78
  31. 36
  32. 90
  33. 28
  34. 16
  35. 30
  36. 9
  37. 80
  38. 55
  39. 8
  40. 40

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