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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 378 · 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: 15, 31, 5, 47? (a) 15 (b) 31 (c) 5 (d) 47
  2. 2.Which number is the odd one out: 66, 13, 97, 33? (a) 66 (b) 13 (c) 97 (d) 33
  3. 3.Which number is the odd one out: 2, 5, 40, 97? (a) 2 (b) 5 (c) 40 (d) 97
  4. 4.Which number is the odd one out: 17, 90, 41, 29? (a) 17 (b) 90 (c) 41 (d) 29
  5. 5.Which number is the odd one out: 53, 91, 98, 14? (a) 53 (b) 91 (c) 98 (d) 14
  6. 6.Which number is the odd one out: 7, 61, 56, 19? (a) 7 (b) 61 (c) 56 (d) 19
  7. 7.Which number is the odd one out: 97, 32, 47, 19? (a) 97 (b) 32 (c) 47 (d) 19
  8. 8.Which number is the odd one out: 13, 3, 84, 23? (a) 13 (b) 3 (c) 84 (d) 23
  9. 9.Which number is the odd one out: 12, 47, 67, 97? (a) 12 (b) 47 (c) 67 (d) 97
  10. 10.Which number is the odd one out: 29, 79, 34, 73? (a) 29 (b) 79 (c) 34 (d) 73
  11. 11.Which number is the odd one out: 71, 59, 53, 34? (a) 71 (b) 59 (c) 53 (d) 34
  12. 12.Which number is the odd one out: 6, 3, 43, 11? (a) 6 (b) 3 (c) 43 (d) 11
  13. 13.Which number is the odd one out: 20, 19, 13, 59? (a) 20 (b) 19 (c) 13 (d) 59
  14. 14.Which number is the odd one out: 41, 23, 50, 11? (a) 41 (b) 23 (c) 50 (d) 11
  15. 15.Which number is the odd one out: 73, 71, 59, 21? (a) 73 (b) 71 (c) 59 (d) 21
  16. 16.Which number is the odd one out: 47, 50, 65, 29? (a) 47 (b) 50 (c) 65 (d) 29
  17. 17.Which number is the odd one out: 97, 94, 2, 61? (a) 97 (b) 94 (c) 2 (d) 61
  18. 18.Which number is the odd one out: 35, 21, 90, 14? (a) 35 (b) 21 (c) 90 (d) 14
  19. 19.Which number is the odd one out: 82, 41, 13, 2? (a) 82 (b) 41 (c) 13 (d) 2
  20. 20.Which number is the odd one out: 89, 59, 45, 79? (a) 89 (b) 59 (c) 45 (d) 79
  21. 21.Which number is the odd one out: 29, 64, 3, 87? (a) 29 (b) 64 (c) 3 (d) 87
  22. 22.Which number is the odd one out: 43, 27, 61, 41? (a) 43 (b) 27 (c) 61 (d) 41
  23. 23.Which number is the odd one out: 43, 47, 3, 12? (a) 43 (b) 47 (c) 3 (d) 12
  24. 24.Which number is the odd one out: 72, 18, 43, 24? (a) 72 (b) 18 (c) 43 (d) 24
  25. 25.Which number is the odd one out: 96, 66, 48, 25? (a) 96 (b) 66 (c) 48 (d) 25
  26. 26.Which number is the odd one out: 29, 63, 13, 83? (a) 29 (b) 63 (c) 13 (d) 83
  27. 27.Which number is the odd one out: 17, 13, 21, 23? (a) 17 (b) 13 (c) 21 (d) 23
  28. 28.Which number is the odd one out: 96, 24, 22, 44? (a) 96 (b) 24 (c) 22 (d) 44
  29. 29.Which number is the odd one out: 53, 3, 42, 23? (a) 53 (b) 3 (c) 42 (d) 23
  30. 30.Which number is the odd one out: 46, 52, 51, 76? (a) 46 (b) 52 (c) 51 (d) 76
  31. 31.Which number is the odd one out: 75, 5, 79, 97? (a) 75 (b) 5 (c) 79 (d) 97
  32. 32.Which number is the odd one out: 24, 96, 73, 6? (a) 24 (b) 96 (c) 73 (d) 6
  33. 33.Which number is the odd one out: 73, 33, 36, 47? (a) 73 (b) 33 (c) 36 (d) 47
  34. 34.Which number is the odd one out: 73, 61, 26, 41? (a) 73 (b) 61 (c) 26 (d) 41
  35. 35.Which number is the odd one out: 31, 55, 23, 47? (a) 31 (b) 55 (c) 23 (d) 47
  36. 36.Which number is the odd one out: 67, 28, 13, 31? (a) 67 (b) 28 (c) 13 (d) 31
  37. 37.Which number is the odd one out: 96, 66, 34, 24? (a) 96 (b) 66 (c) 34 (d) 24
  38. 38.Which number is the odd one out: 57, 65, 75, 55? (a) 57 (b) 65 (c) 75 (d) 55
  39. 39.Which number is the odd one out: 31, 67, 95, 73? (a) 31 (b) 67 (c) 95 (d) 73
  40. 40.Which number is the odd one out: 31, 22, 3, 57? (a) 31 (b) 22 (c) 3 (d) 57

Answer key

  1. 15
  2. 66
  3. 40
  4. 90
  5. 53
  6. 56
  7. 32
  8. 84
  9. 12
  10. 34
  11. 34
  12. 6
  13. 20
  14. 50
  15. 21
  16. 50
  17. 94
  18. 90
  19. 82
  20. 45
  21. 64
  22. 27
  23. 12
  24. 43
  25. 25
  26. 63
  27. 21
  28. 22
  29. 42
  30. 51
  31. 75
  32. 73
  33. 36
  34. 26
  35. 55
  36. 28
  37. 34
  38. 57
  39. 95
  40. 22

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