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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 971 · 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: 8, 59, 2, 19? (a) 8 (b) 59 (c) 2 (d) 19
  2. 2.Which number is the odd one out: 55, 40, 29, 47? (a) 55 (b) 40 (c) 29 (d) 47
  3. 3.Which number is the odd one out: 87, 40, 88, 80? (a) 87 (b) 40 (c) 88 (d) 80
  4. 4.Which number is the odd one out: 72, 67, 83, 23? (a) 72 (b) 67 (c) 83 (d) 23
  5. 5.Which number is the odd one out: 53, 45, 3, 17? (a) 53 (b) 45 (c) 3 (d) 17
  6. 6.Which number is the odd one out: 90, 67, 2, 47? (a) 90 (b) 67 (c) 2 (d) 47
  7. 7.Which number is the odd one out: 40, 48, 95, 96? (a) 40 (b) 48 (c) 95 (d) 96
  8. 8.Which number is the odd one out: 31, 67, 92, 23? (a) 31 (b) 67 (c) 92 (d) 23
  9. 9.Which number is the odd one out: 23, 86, 22, 74? (a) 23 (b) 86 (c) 22 (d) 74
  10. 10.Which number is the odd one out: 73, 13, 81, 43? (a) 73 (b) 13 (c) 81 (d) 43
  11. 11.Which number is the odd one out: 60, 47, 69, 5? (a) 60 (b) 47 (c) 69 (d) 5
  12. 12.Which number is the odd one out: 97, 36, 33, 83? (a) 97 (b) 36 (c) 33 (d) 83
  13. 13.Which number is the odd one out: 97, 99, 17, 29? (a) 97 (b) 99 (c) 17 (d) 29
  14. 14.Which number is the odd one out: 48, 31, 6, 96? (a) 48 (b) 31 (c) 6 (d) 96
  15. 15.Which number is the odd one out: 21, 73, 17, 3? (a) 21 (b) 73 (c) 17 (d) 3
  16. 16.Which number is the odd one out: 17, 70, 23, 11? (a) 17 (b) 70 (c) 23 (d) 11
  17. 17.Which number is the odd one out: 73, 89, 79, 49? (a) 73 (b) 89 (c) 79 (d) 49
  18. 18.Which number is the odd one out: 54, 55, 30, 18? (a) 54 (b) 55 (c) 30 (d) 18
  19. 19.Which number is the odd one out: 47, 97, 53, 4? (a) 47 (b) 97 (c) 53 (d) 4
  20. 20.Which number is the odd one out: 89, 59, 15, 11? (a) 89 (b) 59 (c) 15 (d) 11
  21. 21.Which number is the odd one out: 72, 19, 71, 53? (a) 72 (b) 19 (c) 71 (d) 53
  22. 22.Which number is the odd one out: 99, 80, 40, 32? (a) 99 (b) 80 (c) 40 (d) 32
  23. 23.Which number is the odd one out: 13, 7, 67, 14? (a) 13 (b) 7 (c) 67 (d) 14
  24. 24.Which number is the odd one out: 12, 78, 28, 42? (a) 12 (b) 78 (c) 28 (d) 42
  25. 25.Which number is the odd one out: 89, 74, 47, 17? (a) 89 (b) 74 (c) 47 (d) 17
  26. 26.Which number is the odd one out: 61, 8, 73, 97? (a) 61 (b) 8 (c) 73 (d) 97
  27. 27.Which number is the odd one out: 29, 51, 37, 11? (a) 29 (b) 51 (c) 37 (d) 11
  28. 28.Which number is the odd one out: 53, 83, 66, 37? (a) 53 (b) 83 (c) 66 (d) 37
  29. 29.Which number is the odd one out: 17, 19, 16, 11? (a) 17 (b) 19 (c) 16 (d) 11
  30. 30.Which number is the odd one out: 71, 67, 11, 33? (a) 71 (b) 67 (c) 11 (d) 33
  31. 31.Which number is the odd one out: 31, 83, 64, 71? (a) 31 (b) 83 (c) 64 (d) 71
  32. 32.Which number is the odd one out: 54, 6, 9, 25? (a) 54 (b) 6 (c) 9 (d) 25
  33. 33.Which number is the odd one out: 20, 23, 83, 17? (a) 20 (b) 23 (c) 83 (d) 17
  34. 34.Which number is the odd one out: 9, 16, 81, 8? (a) 9 (b) 16 (c) 81 (d) 8
  35. 35.Which number is the odd one out: 8, 88, 44, 10? (a) 8 (b) 88 (c) 44 (d) 10
  36. 36.Which number is the odd one out: 62, 23, 19, 2? (a) 62 (b) 23 (c) 19 (d) 2
  37. 37.Which number is the odd one out: 17, 21, 41, 59? (a) 17 (b) 21 (c) 41 (d) 59
  38. 38.Which number is the odd one out: 61, 19, 13, 78? (a) 61 (b) 19 (c) 13 (d) 78
  39. 39.Which number is the odd one out: 41, 89, 11, 76? (a) 41 (b) 89 (c) 11 (d) 76
  40. 40.Which number is the odd one out: 37, 41, 67, 8? (a) 37 (b) 41 (c) 67 (d) 8

Answer key

  1. 8
  2. 40
  3. 87
  4. 72
  5. 45
  6. 90
  7. 95
  8. 92
  9. 23
  10. 81
  11. 60
  12. 36
  13. 99
  14. 31
  15. 21
  16. 70
  17. 49
  18. 55
  19. 4
  20. 15
  21. 72
  22. 99
  23. 14
  24. 28
  25. 74
  26. 8
  27. 51
  28. 66
  29. 16
  30. 33
  31. 64
  32. 25
  33. 20
  34. 8
  35. 10
  36. 62
  37. 21
  38. 78
  39. 76
  40. 8

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