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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 450 · 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: 97, 45, 11, 19? (a) 97 (b) 45 (c) 11 (d) 19
  2. 2.Which number is the odd one out: 41, 23, 24, 2? (a) 41 (b) 23 (c) 24 (d) 2
  3. 3.Which number is the odd one out: 39, 3, 34, 71? (a) 39 (b) 3 (c) 34 (d) 71
  4. 4.Which number is the odd one out: 8, 61, 13, 89? (a) 8 (b) 61 (c) 13 (d) 89
  5. 5.Which number is the odd one out: 64, 73, 47, 53? (a) 64 (b) 73 (c) 47 (d) 53
  6. 6.Which number is the odd one out: 71, 94, 83, 19? (a) 71 (b) 94 (c) 83 (d) 19
  7. 7.Which number is the odd one out: 79, 59, 63, 83? (a) 79 (b) 59 (c) 63 (d) 83
  8. 8.Which number is the odd one out: 5, 73, 29, 80? (a) 5 (b) 73 (c) 29 (d) 80
  9. 9.Which number is the odd one out: 17, 85, 29, 43? (a) 17 (b) 85 (c) 29 (d) 43
  10. 10.Which number is the odd one out: 37, 7, 31, 77? (a) 37 (b) 7 (c) 31 (d) 77
  11. 11.Which number is the odd one out: 79, 9, 99, 81? (a) 79 (b) 9 (c) 99 (d) 81
  12. 12.Which number is the odd one out: 13, 11, 64, 47? (a) 13 (b) 11 (c) 64 (d) 47
  13. 13.Which number is the odd one out: 11, 47, 69, 96? (a) 11 (b) 47 (c) 69 (d) 96
  14. 14.Which number is the odd one out: 10, 82, 93, 50? (a) 10 (b) 82 (c) 93 (d) 50
  15. 15.Which number is the odd one out: 73, 4, 11, 59? (a) 73 (b) 4 (c) 11 (d) 59
  16. 16.Which number is the odd one out: 87, 26, 29, 3? (a) 87 (b) 26 (c) 29 (d) 3
  17. 17.Which number is the odd one out: 22, 89, 47, 13? (a) 22 (b) 89 (c) 47 (d) 13
  18. 18.Which number is the odd one out: 48, 8, 24, 38? (a) 48 (b) 8 (c) 24 (d) 38
  19. 19.Which number is the odd one out: 31, 11, 53, 30? (a) 31 (b) 11 (c) 53 (d) 30
  20. 20.Which number is the odd one out: 59, 89, 45, 23? (a) 59 (b) 89 (c) 45 (d) 23
  21. 21.Which number is the odd one out: 42, 98, 25, 66? (a) 42 (b) 98 (c) 25 (d) 66
  22. 22.Which number is the odd one out: 59, 96, 43, 67? (a) 59 (b) 96 (c) 43 (d) 67
  23. 23.Which number is the odd one out: 20, 5, 76, 22? (a) 20 (b) 5 (c) 76 (d) 22
  24. 24.Which number is the odd one out: 45, 18, 90, 97? (a) 45 (b) 18 (c) 90 (d) 97
  25. 25.Which number is the odd one out: 29, 33, 37, 11? (a) 29 (b) 33 (c) 37 (d) 11
  26. 26.Which number is the odd one out: 25, 37, 83, 11? (a) 25 (b) 37 (c) 83 (d) 11
  27. 27.Which number is the odd one out: 67, 95, 13, 59? (a) 67 (b) 95 (c) 13 (d) 59
  28. 28.Which number is the odd one out: 88, 7, 40, 80? (a) 88 (b) 7 (c) 40 (d) 80
  29. 29.Which number is the odd one out: 81, 64, 88, 9? (a) 81 (b) 64 (c) 88 (d) 9
  30. 30.Which number is the odd one out: 97, 61, 96, 29? (a) 97 (b) 61 (c) 96 (d) 29
  31. 31.Which number is the odd one out: 15, 83, 29, 19? (a) 15 (b) 83 (c) 29 (d) 19
  32. 32.Which number is the odd one out: 9, 27, 12, 81? (a) 9 (b) 27 (c) 12 (d) 81
  33. 33.Which number is the odd one out: 57, 59, 31, 23? (a) 57 (b) 59 (c) 31 (d) 23
  34. 34.Which number is the odd one out: 28, 47, 2, 59? (a) 28 (b) 47 (c) 2 (d) 59
  35. 35.Which number is the odd one out: 80, 53, 73, 37? (a) 80 (b) 53 (c) 73 (d) 37
  36. 36.Which number is the odd one out: 17, 31, 90, 13? (a) 17 (b) 31 (c) 90 (d) 13
  37. 37.Which number is the odd one out: 47, 98, 2, 19? (a) 47 (b) 98 (c) 2 (d) 19
  38. 38.Which number is the odd one out: 60, 71, 65, 31? (a) 60 (b) 71 (c) 65 (d) 31
  39. 39.Which number is the odd one out: 29, 70, 11, 2? (a) 29 (b) 70 (c) 11 (d) 2
  40. 40.Which number is the odd one out: 3, 47, 59, 78? (a) 3 (b) 47 (c) 59 (d) 78

Answer key

  1. 45
  2. 24
  3. 34
  4. 8
  5. 64
  6. 94
  7. 63
  8. 80
  9. 85
  10. 77
  11. 79
  12. 64
  13. 96
  14. 93
  15. 4
  16. 26
  17. 22
  18. 38
  19. 30
  20. 45
  21. 25
  22. 96
  23. 5
  24. 97
  25. 33
  26. 25
  27. 95
  28. 7
  29. 88
  30. 96
  31. 15
  32. 12
  33. 57
  34. 28
  35. 80
  36. 90
  37. 98
  38. 60
  39. 70
  40. 78

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