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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 100 · 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, 88, 16, 64? (a) 41 (b) 88 (c) 16 (d) 64
  2. 2.Which number is the odd one out: 18, 79, 19, 17? (a) 18 (b) 79 (c) 19 (d) 17
  3. 3.Which number is the odd one out: 17, 83, 3, 66? (a) 17 (b) 83 (c) 3 (d) 66
  4. 4.Which number is the odd one out: 61, 38, 23, 83? (a) 61 (b) 38 (c) 23 (d) 83
  5. 5.Which number is the odd one out: 5, 34, 13, 65? (a) 5 (b) 34 (c) 13 (d) 65
  6. 6.Which number is the odd one out: 23, 13, 4, 31? (a) 23 (b) 13 (c) 4 (d) 31
  7. 7.Which number is the odd one out: 97, 95, 5, 83? (a) 97 (b) 95 (c) 5 (d) 83
  8. 8.Which number is the odd one out: 21, 77, 96, 14? (a) 21 (b) 77 (c) 96 (d) 14
  9. 9.Which number is the odd one out: 52, 44, 18, 68? (a) 52 (b) 44 (c) 18 (d) 68
  10. 10.Which number is the odd one out: 21, 53, 37, 67? (a) 21 (b) 53 (c) 37 (d) 67
  11. 11.Which number is the odd one out: 64, 49, 22, 88? (a) 64 (b) 49 (c) 22 (d) 88
  12. 12.Which number is the odd one out: 19, 59, 78, 23? (a) 19 (b) 59 (c) 78 (d) 23
  13. 13.Which number is the odd one out: 32, 24, 58, 48? (a) 32 (b) 24 (c) 58 (d) 48
  14. 14.Which number is the odd one out: 44, 37, 59, 17? (a) 44 (b) 37 (c) 59 (d) 17
  15. 15.Which number is the odd one out: 3, 18, 79, 19? (a) 3 (b) 18 (c) 79 (d) 19
  16. 16.Which number is the odd one out: 99, 73, 9, 81? (a) 99 (b) 73 (c) 9 (d) 81
  17. 17.Which number is the odd one out: 19, 47, 34, 67? (a) 19 (b) 47 (c) 34 (d) 67
  18. 18.Which number is the odd one out: 16, 66, 54, 18? (a) 16 (b) 66 (c) 54 (d) 18
  19. 19.Which number is the odd one out: 38, 42, 84, 28? (a) 38 (b) 42 (c) 84 (d) 28
  20. 20.Which number is the odd one out: 19, 54, 59, 41? (a) 19 (b) 54 (c) 59 (d) 41
  21. 21.Which number is the odd one out: 83, 26, 13, 41? (a) 83 (b) 26 (c) 13 (d) 41
  22. 22.Which number is the odd one out: 35, 43, 5, 13? (a) 35 (b) 43 (c) 5 (d) 13
  23. 23.Which number is the odd one out: 24, 28, 56, 96? (a) 24 (b) 28 (c) 56 (d) 96
  24. 24.Which number is the odd one out: 41, 12, 83, 67? (a) 41 (b) 12 (c) 83 (d) 67
  25. 25.Which number is the odd one out: 8, 12, 48, 88? (a) 8 (b) 12 (c) 48 (d) 88
  26. 26.Which number is the odd one out: 17, 47, 26, 59? (a) 17 (b) 47 (c) 26 (d) 59
  27. 27.Which number is the odd one out: 88, 23, 11, 97? (a) 88 (b) 23 (c) 11 (d) 97
  28. 28.Which number is the odd one out: 83, 29, 41, 34? (a) 83 (b) 29 (c) 41 (d) 34
  29. 29.Which number is the odd one out: 61, 89, 29, 57? (a) 61 (b) 89 (c) 29 (d) 57
  30. 30.Which number is the odd one out: 80, 8, 45, 88? (a) 80 (b) 8 (c) 45 (d) 88
  31. 31.Which number is the odd one out: 45, 27, 75, 6? (a) 45 (b) 27 (c) 75 (d) 6
  32. 32.Which number is the odd one out: 11, 5, 20, 43? (a) 11 (b) 5 (c) 20 (d) 43
  33. 33.Which number is the odd one out: 83, 11, 97, 58? (a) 83 (b) 11 (c) 97 (d) 58
  34. 34.Which number is the odd one out: 97, 84, 79, 61? (a) 97 (b) 84 (c) 79 (d) 61
  35. 35.Which number is the odd one out: 36, 14, 49, 21? (a) 36 (b) 14 (c) 49 (d) 21
  36. 36.Which number is the odd one out: 25, 96, 48, 24? (a) 25 (b) 96 (c) 48 (d) 24
  37. 37.Which number is the odd one out: 32, 8, 90, 96? (a) 32 (b) 8 (c) 90 (d) 96
  38. 38.Which number is the odd one out: 13, 45, 18, 90? (a) 13 (b) 45 (c) 18 (d) 90
  39. 39.Which number is the odd one out: 67, 63, 7, 71? (a) 67 (b) 63 (c) 7 (d) 71
  40. 40.Which number is the odd one out: 89, 83, 48, 79? (a) 89 (b) 83 (c) 48 (d) 79

Answer key

  1. 41
  2. 18
  3. 66
  4. 38
  5. 34
  6. 4
  7. 95
  8. 96
  9. 18
  10. 21
  11. 49
  12. 78
  13. 58
  14. 44
  15. 18
  16. 73
  17. 34
  18. 16
  19. 38
  20. 54
  21. 26
  22. 35
  23. 28
  24. 12
  25. 12
  26. 26
  27. 88
  28. 34
  29. 57
  30. 45
  31. 6
  32. 20
  33. 58
  34. 84
  35. 36
  36. 25
  37. 90
  38. 13
  39. 63
  40. 48

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