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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 819 · 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: 4, 65, 20, 55? (a) 4 (b) 65 (c) 20 (d) 55
  2. 2.Which number is the odd one out: 6, 65, 78, 66? (a) 6 (b) 65 (c) 78 (d) 66
  3. 3.Which number is the odd one out: 41, 71, 53, 44? (a) 41 (b) 71 (c) 53 (d) 44
  4. 4.Which number is the odd one out: 71, 66, 3, 47? (a) 71 (b) 66 (c) 3 (d) 47
  5. 5.Which number is the odd one out: 17, 31, 12, 29? (a) 17 (b) 31 (c) 12 (d) 29
  6. 6.Which number is the odd one out: 73, 37, 21, 61? (a) 73 (b) 37 (c) 21 (d) 61
  7. 7.Which number is the odd one out: 23, 22, 71, 43? (a) 23 (b) 22 (c) 71 (d) 43
  8. 8.Which number is the odd one out: 90, 54, 5, 18? (a) 90 (b) 54 (c) 5 (d) 18
  9. 9.Which number is the odd one out: 29, 92, 47, 83? (a) 29 (b) 92 (c) 47 (d) 83
  10. 10.Which number is the odd one out: 61, 92, 13, 59? (a) 61 (b) 92 (c) 13 (d) 59
  11. 11.Which number is the odd one out: 54, 27, 18, 89? (a) 54 (b) 27 (c) 18 (d) 89
  12. 12.Which number is the odd one out: 24, 56, 91, 48? (a) 24 (b) 56 (c) 91 (d) 48
  13. 13.Which number is the odd one out: 30, 53, 89, 5? (a) 30 (b) 53 (c) 89 (d) 5
  14. 14.Which number is the odd one out: 99, 35, 54, 90? (a) 99 (b) 35 (c) 54 (d) 90
  15. 15.Which number is the odd one out: 53, 17, 47, 57? (a) 53 (b) 17 (c) 47 (d) 57
  16. 16.Which number is the odd one out: 19, 13, 43, 76? (a) 19 (b) 13 (c) 43 (d) 76
  17. 17.Which number is the odd one out: 96, 12, 4, 24? (a) 96 (b) 12 (c) 4 (d) 24
  18. 18.Which number is the odd one out: 4, 71, 13, 37? (a) 4 (b) 71 (c) 13 (d) 37
  19. 19.Which number is the odd one out: 53, 46, 31, 97? (a) 53 (b) 46 (c) 31 (d) 97
  20. 20.Which number is the odd one out: 59, 48, 73, 97? (a) 59 (b) 48 (c) 73 (d) 97
  21. 21.Which number is the odd one out: 76, 67, 71, 13? (a) 76 (b) 67 (c) 71 (d) 13
  22. 22.Which number is the odd one out: 13, 22, 47, 23? (a) 13 (b) 22 (c) 47 (d) 23
  23. 23.Which number is the odd one out: 11, 92, 17, 73? (a) 11 (b) 92 (c) 17 (d) 73
  24. 24.Which number is the odd one out: 73, 31, 83, 63? (a) 73 (b) 31 (c) 83 (d) 63
  25. 25.Which number is the odd one out: 41, 17, 87, 54? (a) 41 (b) 17 (c) 87 (d) 54
  26. 26.Which number is the odd one out: 99, 61, 3, 71? (a) 99 (b) 61 (c) 3 (d) 71
  27. 27.Which number is the odd one out: 71, 53, 61, 49? (a) 71 (b) 53 (c) 61 (d) 49
  28. 28.Which number is the odd one out: 23, 28, 13, 79? (a) 23 (b) 28 (c) 13 (d) 79
  29. 29.Which number is the odd one out: 2, 22, 79, 61? (a) 2 (b) 22 (c) 79 (d) 61
  30. 30.Which number is the odd one out: 13, 83, 65, 41? (a) 13 (b) 83 (c) 65 (d) 41
  31. 31.Which number is the odd one out: 89, 81, 29, 19? (a) 89 (b) 81 (c) 29 (d) 19
  32. 32.Which number is the odd one out: 37, 19, 40, 31? (a) 37 (b) 19 (c) 40 (d) 31
  33. 33.Which number is the odd one out: 26, 41, 53, 23? (a) 26 (b) 41 (c) 53 (d) 23
  34. 34.Which number is the odd one out: 83, 2, 19, 82? (a) 83 (b) 2 (c) 19 (d) 82
  35. 35.Which number is the odd one out: 37, 3, 63, 17? (a) 37 (b) 3 (c) 63 (d) 17
  36. 36.Which number is the odd one out: 61, 47, 50, 67? (a) 61 (b) 47 (c) 50 (d) 67
  37. 37.Which number is the odd one out: 25, 90, 66, 99? (a) 25 (b) 90 (c) 66 (d) 99
  38. 38.Which number is the odd one out: 18, 67, 3, 2? (a) 18 (b) 67 (c) 3 (d) 2
  39. 39.Which number is the odd one out: 21, 53, 17, 37? (a) 21 (b) 53 (c) 17 (d) 37
  40. 40.Which number is the odd one out: 35, 45, 63, 27? (a) 35 (b) 45 (c) 63 (d) 27

Answer key

  1. 4
  2. 65
  3. 44
  4. 66
  5. 12
  6. 21
  7. 22
  8. 5
  9. 92
  10. 92
  11. 89
  12. 91
  13. 30
  14. 35
  15. 57
  16. 76
  17. 4
  18. 4
  19. 46
  20. 48
  21. 76
  22. 22
  23. 92
  24. 63
  25. 54
  26. 99
  27. 49
  28. 28
  29. 22
  30. 65
  31. 81
  32. 40
  33. 26
  34. 82
  35. 63
  36. 50
  37. 25
  38. 18
  39. 21
  40. 35

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