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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 615 · 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: 21, 13, 41, 23? (a) 21 (b) 13 (c) 41 (d) 23
  2. 2.Which number is the odd one out: 97, 87, 61, 67? (a) 97 (b) 87 (c) 61 (d) 67
  3. 3.Which number is the odd one out: 35, 55, 85, 28? (a) 35 (b) 55 (c) 85 (d) 28
  4. 4.Which number is the odd one out: 71, 50, 67, 2? (a) 71 (b) 50 (c) 67 (d) 2
  5. 5.Which number is the odd one out: 96, 47, 83, 37? (a) 96 (b) 47 (c) 83 (d) 37
  6. 6.Which number is the odd one out: 57, 11, 54, 18? (a) 57 (b) 11 (c) 54 (d) 18
  7. 7.Which number is the odd one out: 80, 88, 2, 40? (a) 80 (b) 88 (c) 2 (d) 40
  8. 8.Which number is the odd one out: 41, 43, 18, 3? (a) 41 (b) 43 (c) 18 (d) 3
  9. 9.Which number is the odd one out: 48, 89, 73, 2? (a) 48 (b) 89 (c) 73 (d) 2
  10. 10.Which number is the odd one out: 5, 65, 47, 19? (a) 5 (b) 65 (c) 47 (d) 19
  11. 11.Which number is the odd one out: 75, 18, 47, 5? (a) 75 (b) 18 (c) 47 (d) 5
  12. 12.Which number is the odd one out: 5, 16, 4, 64? (a) 5 (b) 16 (c) 4 (d) 64
  13. 13.Which number is the odd one out: 82, 49, 56, 8? (a) 82 (b) 49 (c) 56 (d) 8
  14. 14.Which number is the odd one out: 29, 17, 76, 59? (a) 29 (b) 17 (c) 76 (d) 59
  15. 15.Which number is the odd one out: 50, 97, 13, 71? (a) 50 (b) 97 (c) 13 (d) 71
  16. 16.Which number is the odd one out: 11, 52, 22, 68? (a) 11 (b) 52 (c) 22 (d) 68
  17. 17.Which number is the odd one out: 5, 10, 41, 17? (a) 5 (b) 10 (c) 41 (d) 17
  18. 18.Which number is the odd one out: 50, 10, 95, 51? (a) 50 (b) 10 (c) 95 (d) 51
  19. 19.Which number is the odd one out: 23, 37, 41, 54? (a) 23 (b) 37 (c) 41 (d) 54
  20. 20.Which number is the odd one out: 13, 83, 75, 89? (a) 13 (b) 83 (c) 75 (d) 89
  21. 21.Which number is the odd one out: 83, 18, 23, 89? (a) 83 (b) 18 (c) 23 (d) 89
  22. 22.Which number is the odd one out: 57, 29, 10, 3? (a) 57 (b) 29 (c) 10 (d) 3
  23. 23.Which number is the odd one out: 55, 13, 11, 71? (a) 55 (b) 13 (c) 11 (d) 71
  24. 24.Which number is the odd one out: 24, 48, 12, 21? (a) 24 (b) 48 (c) 12 (d) 21
  25. 25.Which number is the odd one out: 61, 54, 89, 73? (a) 61 (b) 54 (c) 89 (d) 73
  26. 26.Which number is the odd one out: 37, 3, 79, 48? (a) 37 (b) 3 (c) 79 (d) 48
  27. 27.Which number is the odd one out: 11, 41, 63, 73? (a) 11 (b) 41 (c) 63 (d) 73
  28. 28.Which number is the odd one out: 31, 19, 35, 97? (a) 31 (b) 19 (c) 35 (d) 97
  29. 29.Which number is the odd one out: 71, 50, 13, 17? (a) 71 (b) 50 (c) 13 (d) 17
  30. 30.Which number is the odd one out: 41, 36, 79, 31? (a) 41 (b) 36 (c) 79 (d) 31
  31. 31.Which number is the odd one out: 93, 90, 11, 19? (a) 93 (b) 90 (c) 11 (d) 19
  32. 32.Which number is the odd one out: 73, 31, 63, 59? (a) 73 (b) 31 (c) 63 (d) 59
  33. 33.Which number is the odd one out: 3, 29, 42, 67? (a) 3 (b) 29 (c) 42 (d) 67
  34. 34.Which number is the odd one out: 23, 31, 71, 70? (a) 23 (b) 31 (c) 71 (d) 70
  35. 35.Which number is the odd one out: 31, 62, 97, 17? (a) 31 (b) 62 (c) 97 (d) 17
  36. 36.Which number is the odd one out: 97, 79, 53, 39? (a) 97 (b) 79 (c) 53 (d) 39
  37. 37.Which number is the odd one out: 78, 71, 23, 3? (a) 78 (b) 71 (c) 23 (d) 3
  38. 38.Which number is the odd one out: 59, 78, 89, 23? (a) 59 (b) 78 (c) 89 (d) 23
  39. 39.Which number is the odd one out: 83, 89, 53, 95? (a) 83 (b) 89 (c) 53 (d) 95
  40. 40.Which number is the odd one out: 73, 45, 31, 11? (a) 73 (b) 45 (c) 31 (d) 11

Answer key

  1. 21
  2. 87
  3. 28
  4. 50
  5. 96
  6. 11
  7. 2
  8. 18
  9. 48
  10. 65
  11. 18
  12. 5
  13. 49
  14. 76
  15. 50
  16. 11
  17. 10
  18. 51
  19. 54
  20. 75
  21. 18
  22. 10
  23. 55
  24. 21
  25. 54
  26. 48
  27. 63
  28. 35
  29. 50
  30. 36
  31. 90
  32. 63
  33. 42
  34. 70
  35. 62
  36. 39
  37. 78
  38. 78
  39. 95
  40. 45

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