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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 733 · 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: 23, 97, 78, 17? (a) 23 (b) 97 (c) 78 (d) 17
  2. 2.Which number is the odd one out: 18, 47, 23, 59? (a) 18 (b) 47 (c) 23 (d) 59
  3. 3.Which number is the odd one out: 8, 64, 16, 77? (a) 8 (b) 64 (c) 16 (d) 77
  4. 4.Which number is the odd one out: 14, 11, 41, 71? (a) 14 (b) 11 (c) 41 (d) 71
  5. 5.Which number is the odd one out: 43, 47, 37, 35? (a) 43 (b) 47 (c) 37 (d) 35
  6. 6.Which number is the odd one out: 4, 35, 55, 70? (a) 4 (b) 35 (c) 55 (d) 70
  7. 7.Which number is the odd one out: 29, 16, 13, 67? (a) 29 (b) 16 (c) 13 (d) 67
  8. 8.Which number is the odd one out: 89, 71, 67, 25? (a) 89 (b) 71 (c) 67 (d) 25
  9. 9.Which number is the odd one out: 74, 2, 31, 71? (a) 74 (b) 2 (c) 31 (d) 71
  10. 10.Which number is the odd one out: 10, 83, 71, 73? (a) 10 (b) 83 (c) 71 (d) 73
  11. 11.Which number is the odd one out: 41, 51, 11, 47? (a) 41 (b) 51 (c) 11 (d) 47
  12. 12.Which number is the odd one out: 24, 85, 96, 8? (a) 24 (b) 85 (c) 96 (d) 8
  13. 13.Which number is the odd one out: 64, 37, 53, 73? (a) 64 (b) 37 (c) 53 (d) 73
  14. 14.Which number is the odd one out: 37, 13, 31, 46? (a) 37 (b) 13 (c) 31 (d) 46
  15. 15.Which number is the odd one out: 97, 89, 12, 3? (a) 97 (b) 89 (c) 12 (d) 3
  16. 16.Which number is the odd one out: 59, 83, 53, 92? (a) 59 (b) 83 (c) 53 (d) 92
  17. 17.Which number is the odd one out: 20, 41, 43, 53? (a) 20 (b) 41 (c) 43 (d) 53
  18. 18.Which number is the odd one out: 12, 65, 22, 60? (a) 12 (b) 65 (c) 22 (d) 60
  19. 19.Which number is the odd one out: 97, 8, 71, 11? (a) 97 (b) 8 (c) 71 (d) 11
  20. 20.Which number is the odd one out: 20, 56, 70, 50? (a) 20 (b) 56 (c) 70 (d) 50
  21. 21.Which number is the odd one out: 89, 36, 41, 79? (a) 89 (b) 36 (c) 41 (d) 79
  22. 22.Which number is the odd one out: 73, 31, 34, 67? (a) 73 (b) 31 (c) 34 (d) 67
  23. 23.Which number is the odd one out: 47, 66, 29, 17? (a) 47 (b) 66 (c) 29 (d) 17
  24. 24.Which number is the odd one out: 31, 37, 32, 11? (a) 31 (b) 37 (c) 32 (d) 11
  25. 25.Which number is the odd one out: 94, 61, 31, 37? (a) 94 (b) 61 (c) 31 (d) 37
  26. 26.Which number is the odd one out: 58, 86, 19, 26? (a) 58 (b) 86 (c) 19 (d) 26
  27. 27.Which number is the odd one out: 30, 17, 15, 29? (a) 30 (b) 17 (c) 15 (d) 29
  28. 28.Which number is the odd one out: 27, 83, 24, 72? (a) 27 (b) 83 (c) 24 (d) 72
  29. 29.Which number is the odd one out: 97, 79, 15, 19? (a) 97 (b) 79 (c) 15 (d) 19
  30. 30.Which number is the odd one out: 41, 95, 73, 13? (a) 41 (b) 95 (c) 73 (d) 13
  31. 31.Which number is the odd one out: 8, 2, 23, 61? (a) 8 (b) 2 (c) 23 (d) 61
  32. 32.Which number is the odd one out: 32, 24, 96, 61? (a) 32 (b) 24 (c) 96 (d) 61
  33. 33.Which number is the odd one out: 73, 8, 61, 97? (a) 73 (b) 8 (c) 61 (d) 97
  34. 34.Which number is the odd one out: 46, 50, 35, 62? (a) 46 (b) 50 (c) 35 (d) 62
  35. 35.Which number is the odd one out: 29, 43, 38, 2? (a) 29 (b) 43 (c) 38 (d) 2
  36. 36.Which number is the odd one out: 83, 67, 31, 49? (a) 83 (b) 67 (c) 31 (d) 49
  37. 37.Which number is the odd one out: 96, 88, 53, 24? (a) 96 (b) 88 (c) 53 (d) 24
  38. 38.Which number is the odd one out: 31, 13, 11, 98? (a) 31 (b) 13 (c) 11 (d) 98
  39. 39.Which number is the odd one out: 30, 75, 79, 61? (a) 30 (b) 75 (c) 79 (d) 61
  40. 40.Which number is the odd one out: 10, 19, 70, 14? (a) 10 (b) 19 (c) 70 (d) 14

Answer key

  1. 78
  2. 18
  3. 77
  4. 14
  5. 35
  6. 4
  7. 16
  8. 25
  9. 74
  10. 10
  11. 51
  12. 85
  13. 64
  14. 46
  15. 12
  16. 92
  17. 20
  18. 65
  19. 8
  20. 56
  21. 36
  22. 34
  23. 66
  24. 32
  25. 94
  26. 19
  27. 30
  28. 83
  29. 15
  30. 95
  31. 8
  32. 61
  33. 8
  34. 35
  35. 38
  36. 49
  37. 53
  38. 98
  39. 30
  40. 19

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