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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 72 · 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: 35, 63, 45, 27? (a) 35 (b) 63 (c) 45 (d) 27
  2. 2.Which number is the odd one out: 13, 21, 47, 11? (a) 13 (b) 21 (c) 47 (d) 11
  3. 3.Which number is the odd one out: 16, 64, 26, 5? (a) 16 (b) 64 (c) 26 (d) 5
  4. 4.Which number is the odd one out: 78, 40, 20, 88? (a) 78 (b) 40 (c) 20 (d) 88
  5. 5.Which number is the odd one out: 73, 89, 79, 56? (a) 73 (b) 89 (c) 79 (d) 56
  6. 6.Which number is the odd one out: 83, 71, 47, 26? (a) 83 (b) 71 (c) 47 (d) 26
  7. 7.Which number is the odd one out: 24, 91, 77, 28? (a) 24 (b) 91 (c) 77 (d) 28
  8. 8.Which number is the odd one out: 2, 16, 97, 19? (a) 2 (b) 16 (c) 97 (d) 19
  9. 9.Which number is the odd one out: 90, 11, 23, 61? (a) 90 (b) 11 (c) 23 (d) 61
  10. 10.Which number is the odd one out: 46, 47, 2, 13? (a) 46 (b) 47 (c) 2 (d) 13
  11. 11.Which number is the odd one out: 23, 24, 3, 96? (a) 23 (b) 24 (c) 3 (d) 96
  12. 12.Which number is the odd one out: 50, 67, 97, 11? (a) 50 (b) 67 (c) 97 (d) 11
  13. 13.Which number is the odd one out: 11, 89, 71, 49? (a) 11 (b) 89 (c) 71 (d) 49
  14. 14.Which number is the odd one out: 13, 70, 2, 97? (a) 13 (b) 70 (c) 2 (d) 97
  15. 15.Which number is the odd one out: 4, 19, 79, 13? (a) 4 (b) 19 (c) 79 (d) 13
  16. 16.Which number is the odd one out: 67, 23, 2, 43? (a) 67 (b) 23 (c) 2 (d) 43
  17. 17.Which number is the odd one out: 30, 60, 88, 8? (a) 30 (b) 60 (c) 88 (d) 8
  18. 18.Which number is the odd one out: 71, 81, 41, 61? (a) 71 (b) 81 (c) 41 (d) 61
  19. 19.Which number is the odd one out: 24, 96, 31, 48? (a) 24 (b) 96 (c) 31 (d) 48
  20. 20.Which number is the odd one out: 11, 53, 33, 42? (a) 11 (b) 53 (c) 33 (d) 42
  21. 21.Which number is the odd one out: 8, 32, 48, 12? (a) 8 (b) 32 (c) 48 (d) 12
  22. 22.Which number is the odd one out: 35, 16, 49, 64? (a) 35 (b) 16 (c) 49 (d) 64
  23. 23.Which number is the odd one out: 2, 89, 97, 86? (a) 2 (b) 89 (c) 97 (d) 86
  24. 24.Which number is the odd one out: 47, 13, 63, 43? (a) 47 (b) 13 (c) 63 (d) 43
  25. 25.Which number is the odd one out: 89, 2, 10, 43? (a) 89 (b) 2 (c) 10 (d) 43
  26. 26.Which number is the odd one out: 67, 61, 23, 88? (a) 67 (b) 61 (c) 23 (d) 88
  27. 27.Which number is the odd one out: 12, 32, 61, 24? (a) 12 (b) 32 (c) 61 (d) 24
  28. 28.Which number is the odd one out: 41, 7, 53, 28? (a) 41 (b) 7 (c) 53 (d) 28
  29. 29.Which number is the odd one out: 37, 39, 47, 12? (a) 37 (b) 39 (c) 47 (d) 12
  30. 30.Which number is the odd one out: 22, 17, 47, 23? (a) 22 (b) 17 (c) 47 (d) 23
  31. 31.Which number is the odd one out: 79, 51, 59, 37? (a) 79 (b) 51 (c) 59 (d) 37
  32. 32.Which number is the odd one out: 65, 92, 20, 52? (a) 65 (b) 92 (c) 20 (d) 52
  33. 33.Which number is the odd one out: 13, 83, 62, 2? (a) 13 (b) 83 (c) 62 (d) 2
  34. 34.Which number is the odd one out: 57, 91, 87, 33? (a) 57 (b) 91 (c) 87 (d) 33
  35. 35.Which number is the odd one out: 11, 53, 98, 43? (a) 11 (b) 53 (c) 98 (d) 43
  36. 36.Which number is the odd one out: 31, 17, 77, 43? (a) 31 (b) 17 (c) 77 (d) 43
  37. 37.Which number is the odd one out: 54, 47, 45, 90? (a) 54 (b) 47 (c) 45 (d) 90
  38. 38.Which number is the odd one out: 96, 12, 25, 24? (a) 96 (b) 12 (c) 25 (d) 24
  39. 39.Which number is the odd one out: 71, 41, 60, 17? (a) 71 (b) 41 (c) 60 (d) 17
  40. 40.Which number is the odd one out: 52, 97, 13, 53? (a) 52 (b) 97 (c) 13 (d) 53

Answer key

  1. 35
  2. 21
  3. 5
  4. 78
  5. 56
  6. 26
  7. 24
  8. 16
  9. 90
  10. 46
  11. 23
  12. 50
  13. 49
  14. 70
  15. 4
  16. 2
  17. 30
  18. 81
  19. 31
  20. 42
  21. 12
  22. 35
  23. 86
  24. 63
  25. 10
  26. 88
  27. 61
  28. 28
  29. 12
  30. 22
  31. 51
  32. 65
  33. 62
  34. 91
  35. 98
  36. 77
  37. 47
  38. 25
  39. 60
  40. 52

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