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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 140 · 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: 71, 2, 70, 31? (a) 71 (b) 2 (c) 70 (d) 31
  2. 2.Which number is the odd one out: 61, 22, 89, 83? (a) 61 (b) 22 (c) 89 (d) 83
  3. 3.Which number is the odd one out: 54, 72, 73, 96? (a) 54 (b) 72 (c) 73 (d) 96
  4. 4.Which number is the odd one out: 89, 31, 41, 39? (a) 89 (b) 31 (c) 41 (d) 39
  5. 5.Which number is the odd one out: 53, 84, 79, 47? (a) 53 (b) 84 (c) 79 (d) 47
  6. 6.Which number is the odd one out: 24, 57, 17, 79? (a) 24 (b) 57 (c) 17 (d) 79
  7. 7.Which number is the odd one out: 11, 59, 6, 2? (a) 11 (b) 59 (c) 6 (d) 2
  8. 8.Which number is the odd one out: 55, 35, 28, 50? (a) 55 (b) 35 (c) 28 (d) 50
  9. 9.Which number is the odd one out: 15, 43, 23, 59? (a) 15 (b) 43 (c) 23 (d) 59
  10. 10.Which number is the odd one out: 31, 61, 13, 6? (a) 31 (b) 61 (c) 13 (d) 6
  11. 11.Which number is the odd one out: 79, 44, 29, 2? (a) 79 (b) 44 (c) 29 (d) 2
  12. 12.Which number is the odd one out: 41, 89, 79, 48? (a) 41 (b) 89 (c) 79 (d) 48
  13. 13.Which number is the odd one out: 73, 11, 41, 28? (a) 73 (b) 11 (c) 41 (d) 28
  14. 14.Which number is the odd one out: 76, 67, 89, 97? (a) 76 (b) 67 (c) 89 (d) 97
  15. 15.Which number is the odd one out: 97, 31, 8, 11? (a) 97 (b) 31 (c) 8 (d) 11
  16. 16.Which number is the odd one out: 60, 11, 53, 59? (a) 60 (b) 11 (c) 53 (d) 59
  17. 17.Which number is the odd one out: 23, 24, 11, 17? (a) 23 (b) 24 (c) 11 (d) 17
  18. 18.Which number is the odd one out: 41, 23, 56, 61? (a) 41 (b) 23 (c) 56 (d) 61
  19. 19.Which number is the odd one out: 60, 33, 15, 51? (a) 60 (b) 33 (c) 15 (d) 51
  20. 20.Which number is the odd one out: 23, 88, 79, 37? (a) 23 (b) 88 (c) 79 (d) 37
  21. 21.Which number is the odd one out: 80, 67, 23, 17? (a) 80 (b) 67 (c) 23 (d) 17
  22. 22.Which number is the odd one out: 42, 59, 97, 23? (a) 42 (b) 59 (c) 97 (d) 23
  23. 23.Which number is the odd one out: 80, 9, 32, 40? (a) 80 (b) 9 (c) 32 (d) 40
  24. 24.Which number is the odd one out: 20, 55, 36, 45? (a) 20 (b) 55 (c) 36 (d) 45
  25. 25.Which number is the odd one out: 91, 63, 27, 26? (a) 91 (b) 63 (c) 27 (d) 26
  26. 26.Which number is the odd one out: 30, 60, 20, 22? (a) 30 (b) 60 (c) 20 (d) 22
  27. 27.Which number is the odd one out: 53, 47, 23, 51? (a) 53 (b) 47 (c) 23 (d) 51
  28. 28.Which number is the odd one out: 85, 55, 42, 15? (a) 85 (b) 55 (c) 42 (d) 15
  29. 29.Which number is the odd one out: 41, 2, 66, 79? (a) 41 (b) 2 (c) 66 (d) 79
  30. 30.Which number is the odd one out: 84, 73, 89, 43? (a) 84 (b) 73 (c) 89 (d) 43
  31. 31.Which number is the odd one out: 98, 10, 95, 55? (a) 98 (b) 10 (c) 95 (d) 55
  32. 32.Which number is the odd one out: 61, 13, 22, 23? (a) 61 (b) 13 (c) 22 (d) 23
  33. 33.Which number is the odd one out: 27, 46, 81, 9? (a) 27 (b) 46 (c) 81 (d) 9
  34. 34.Which number is the odd one out: 88, 96, 24, 97? (a) 88 (b) 96 (c) 24 (d) 97
  35. 35.Which number is the odd one out: 71, 48, 8, 24? (a) 71 (b) 48 (c) 8 (d) 24
  36. 36.Which number is the odd one out: 24, 25, 80, 48? (a) 24 (b) 25 (c) 80 (d) 48
  37. 37.Which number is the odd one out: 73, 39, 17, 61? (a) 73 (b) 39 (c) 17 (d) 61
  38. 38.Which number is the odd one out: 12, 43, 11, 23? (a) 12 (b) 43 (c) 11 (d) 23
  39. 39.Which number is the odd one out: 71, 80, 83, 2? (a) 71 (b) 80 (c) 83 (d) 2
  40. 40.Which number is the odd one out: 19, 53, 97, 66? (a) 19 (b) 53 (c) 97 (d) 66

Answer key

  1. 70
  2. 22
  3. 73
  4. 39
  5. 84
  6. 24
  7. 6
  8. 28
  9. 15
  10. 6
  11. 44
  12. 48
  13. 28
  14. 76
  15. 8
  16. 60
  17. 24
  18. 56
  19. 60
  20. 88
  21. 80
  22. 42
  23. 9
  24. 36
  25. 26
  26. 22
  27. 51
  28. 42
  29. 66
  30. 84
  31. 98
  32. 22
  33. 46
  34. 97
  35. 71
  36. 25
  37. 39
  38. 12
  39. 80
  40. 66

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