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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 945 · 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: 41, 83, 17, 70? (a) 41 (b) 83 (c) 17 (d) 70
  2. 2.Which number is the odd one out: 66, 6, 44, 78? (a) 66 (b) 6 (c) 44 (d) 78
  3. 3.Which number is the odd one out: 92, 2, 73, 61? (a) 92 (b) 2 (c) 73 (d) 61
  4. 4.Which number is the odd one out: 77, 35, 15, 21? (a) 77 (b) 35 (c) 15 (d) 21
  5. 5.Which number is the odd one out: 90, 66, 27, 30? (a) 90 (b) 66 (c) 27 (d) 30
  6. 6.Which number is the odd one out: 83, 66, 43, 59? (a) 83 (b) 66 (c) 43 (d) 59
  7. 7.Which number is the odd one out: 51, 64, 88, 16? (a) 51 (b) 64 (c) 88 (d) 16
  8. 8.Which number is the odd one out: 59, 63, 13, 41? (a) 59 (b) 63 (c) 13 (d) 41
  9. 9.Which number is the odd one out: 43, 74, 92, 52? (a) 43 (b) 74 (c) 92 (d) 52
  10. 10.Which number is the odd one out: 79, 89, 23, 90? (a) 79 (b) 89 (c) 23 (d) 90
  11. 11.Which number is the odd one out: 17, 48, 23, 89? (a) 17 (b) 48 (c) 23 (d) 89
  12. 12.Which number is the odd one out: 9, 63, 14, 98? (a) 9 (b) 63 (c) 14 (d) 98
  13. 13.Which number is the odd one out: 2, 92, 59, 17? (a) 2 (b) 92 (c) 59 (d) 17
  14. 14.Which number is the odd one out: 83, 17, 74, 13? (a) 83 (b) 17 (c) 74 (d) 13
  15. 15.Which number is the odd one out: 48, 30, 96, 15? (a) 48 (b) 30 (c) 96 (d) 15
  16. 16.Which number is the odd one out: 23, 11, 82, 71? (a) 23 (b) 11 (c) 82 (d) 71
  17. 17.Which number is the odd one out: 19, 12, 83, 29? (a) 19 (b) 12 (c) 83 (d) 29
  18. 18.Which number is the odd one out: 91, 32, 44, 88? (a) 91 (b) 32 (c) 44 (d) 88
  19. 19.Which number is the odd one out: 79, 73, 3, 18? (a) 79 (b) 73 (c) 3 (d) 18
  20. 20.Which number is the odd one out: 67, 83, 93, 43? (a) 67 (b) 83 (c) 93 (d) 43
  21. 21.Which number is the odd one out: 71, 95, 59, 89? (a) 71 (b) 95 (c) 59 (d) 89
  22. 22.Which number is the odd one out: 41, 6, 11, 47? (a) 41 (b) 6 (c) 11 (d) 47
  23. 23.Which number is the odd one out: 16, 64, 66, 4? (a) 16 (b) 64 (c) 66 (d) 4
  24. 24.Which number is the odd one out: 27, 26, 69, 99? (a) 27 (b) 26 (c) 69 (d) 99
  25. 25.Which number is the odd one out: 64, 73, 11, 29? (a) 64 (b) 73 (c) 11 (d) 29
  26. 26.Which number is the odd one out: 92, 10, 76, 68? (a) 92 (b) 10 (c) 76 (d) 68
  27. 27.Which number is the odd one out: 82, 43, 19, 61? (a) 82 (b) 43 (c) 19 (d) 61
  28. 28.Which number is the odd one out: 70, 73, 7, 23? (a) 70 (b) 73 (c) 7 (d) 23
  29. 29.Which number is the odd one out: 12, 47, 61, 17? (a) 12 (b) 47 (c) 61 (d) 17
  30. 30.Which number is the odd one out: 29, 12, 11, 71? (a) 29 (b) 12 (c) 11 (d) 71
  31. 31.Which number is the odd one out: 60, 49, 84, 10? (a) 60 (b) 49 (c) 84 (d) 10
  32. 32.Which number is the odd one out: 2, 47, 40, 79? (a) 2 (b) 47 (c) 40 (d) 79
  33. 33.Which number is the odd one out: 87, 51, 20, 15? (a) 87 (b) 51 (c) 20 (d) 15
  34. 34.Which number is the odd one out: 47, 61, 3, 36? (a) 47 (b) 61 (c) 3 (d) 36
  35. 35.Which number is the odd one out: 64, 12, 48, 16? (a) 64 (b) 12 (c) 48 (d) 16
  36. 36.Which number is the odd one out: 51, 43, 18, 73? (a) 51 (b) 43 (c) 18 (d) 73
  37. 37.Which number is the odd one out: 59, 83, 13, 46? (a) 59 (b) 83 (c) 13 (d) 46
  38. 38.Which number is the odd one out: 3, 45, 79, 47? (a) 3 (b) 45 (c) 79 (d) 47
  39. 39.Which number is the odd one out: 13, 17, 48, 43? (a) 13 (b) 17 (c) 48 (d) 43
  40. 40.Which number is the odd one out: 99, 32, 44, 8? (a) 99 (b) 32 (c) 44 (d) 8

Answer key

  1. 70
  2. 44
  3. 92
  4. 15
  5. 27
  6. 66
  7. 51
  8. 63
  9. 43
  10. 90
  11. 48
  12. 9
  13. 92
  14. 74
  15. 15
  16. 82
  17. 12
  18. 91
  19. 18
  20. 93
  21. 95
  22. 6
  23. 66
  24. 26
  25. 64
  26. 10
  27. 82
  28. 70
  29. 12
  30. 12
  31. 49
  32. 40
  33. 20
  34. 36
  35. 12
  36. 18
  37. 46
  38. 45
  39. 48
  40. 99

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