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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 129 · 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, 13, 64, 2? (a) 97 (b) 13 (c) 64 (d) 2
  2. 2.Which number is the odd one out: 89, 11, 79, 14? (a) 89 (b) 11 (c) 79 (d) 14
  3. 3.Which number is the odd one out: 17, 31, 35, 73? (a) 17 (b) 31 (c) 35 (d) 73
  4. 4.Which number is the odd one out: 59, 71, 15, 97? (a) 59 (b) 71 (c) 15 (d) 97
  5. 5.Which number is the odd one out: 95, 41, 53, 10? (a) 95 (b) 41 (c) 53 (d) 10
  6. 6.Which number is the odd one out: 97, 89, 65, 41? (a) 97 (b) 89 (c) 65 (d) 41
  7. 7.Which number is the odd one out: 63, 17, 97, 67? (a) 63 (b) 17 (c) 97 (d) 67
  8. 8.Which number is the odd one out: 37, 98, 67, 31? (a) 37 (b) 98 (c) 67 (d) 31
  9. 9.Which number is the odd one out: 37, 66, 51, 79? (a) 37 (b) 66 (c) 51 (d) 79
  10. 10.Which number is the odd one out: 99, 21, 14, 98? (a) 99 (b) 21 (c) 14 (d) 98
  11. 11.Which number is the odd one out: 37, 29, 13, 6? (a) 37 (b) 29 (c) 13 (d) 6
  12. 12.Which number is the odd one out: 40, 45, 9, 81? (a) 40 (b) 45 (c) 9 (d) 81
  13. 13.Which number is the odd one out: 3, 19, 53, 78? (a) 3 (b) 19 (c) 53 (d) 78
  14. 14.Which number is the odd one out: 17, 74, 79, 97? (a) 17 (b) 74 (c) 79 (d) 97
  15. 15.Which number is the odd one out: 47, 59, 23, 87? (a) 47 (b) 59 (c) 23 (d) 87
  16. 16.Which number is the odd one out: 11, 59, 97, 62? (a) 11 (b) 59 (c) 97 (d) 62
  17. 17.Which number is the odd one out: 83, 86, 59, 11? (a) 83 (b) 86 (c) 59 (d) 11
  18. 18.Which number is the odd one out: 19, 11, 28, 53? (a) 19 (b) 11 (c) 28 (d) 53
  19. 19.Which number is the odd one out: 18, 66, 72, 56? (a) 18 (b) 66 (c) 72 (d) 56
  20. 20.Which number is the odd one out: 84, 42, 40, 30? (a) 84 (b) 42 (c) 40 (d) 30
  21. 21.Which number is the odd one out: 83, 65, 13, 97? (a) 83 (b) 65 (c) 13 (d) 97
  22. 22.Which number is the odd one out: 66, 54, 40, 18? (a) 66 (b) 54 (c) 40 (d) 18
  23. 23.Which number is the odd one out: 13, 79, 15, 59? (a) 13 (b) 79 (c) 15 (d) 59
  24. 24.Which number is the odd one out: 30, 16, 88, 64? (a) 30 (b) 16 (c) 88 (d) 64
  25. 25.Which number is the odd one out: 61, 89, 53, 95? (a) 61 (b) 89 (c) 53 (d) 95
  26. 26.Which number is the odd one out: 19, 79, 83, 45? (a) 19 (b) 79 (c) 83 (d) 45
  27. 27.Which number is the odd one out: 29, 12, 23, 41? (a) 29 (b) 12 (c) 23 (d) 41
  28. 28.Which number is the odd one out: 36, 20, 45, 85? (a) 36 (b) 20 (c) 45 (d) 85
  29. 29.Which number is the odd one out: 54, 63, 35, 18? (a) 54 (b) 63 (c) 35 (d) 18
  30. 30.Which number is the odd one out: 99, 93, 27, 8? (a) 99 (b) 93 (c) 27 (d) 8
  31. 31.Which number is the odd one out: 47, 13, 45, 5? (a) 47 (b) 13 (c) 45 (d) 5
  32. 32.Which number is the odd one out: 11, 17, 54, 19? (a) 11 (b) 17 (c) 54 (d) 19
  33. 33.Which number is the odd one out: 34, 53, 26, 46? (a) 34 (b) 53 (c) 26 (d) 46
  34. 34.Which number is the odd one out: 53, 72, 2, 79? (a) 53 (b) 72 (c) 2 (d) 79
  35. 35.Which number is the odd one out: 2, 44, 13, 11? (a) 2 (b) 44 (c) 13 (d) 11
  36. 36.Which number is the odd one out: 78, 17, 53, 59? (a) 78 (b) 17 (c) 53 (d) 59
  37. 37.Which number is the odd one out: 61, 32, 47, 29? (a) 61 (b) 32 (c) 47 (d) 29
  38. 38.Which number is the odd one out: 11, 78, 3, 43? (a) 11 (b) 78 (c) 3 (d) 43
  39. 39.Which number is the odd one out: 78, 24, 48, 26? (a) 78 (b) 24 (c) 48 (d) 26
  40. 40.Which number is the odd one out: 78, 51, 47, 43? (a) 78 (b) 51 (c) 47 (d) 43

Answer key

  1. 64
  2. 14
  3. 35
  4. 15
  5. 10
  6. 65
  7. 63
  8. 98
  9. 66
  10. 99
  11. 6
  12. 40
  13. 78
  14. 74
  15. 87
  16. 62
  17. 86
  18. 28
  19. 56
  20. 40
  21. 65
  22. 40
  23. 15
  24. 30
  25. 95
  26. 45
  27. 12
  28. 36
  29. 35
  30. 8
  31. 45
  32. 54
  33. 53
  34. 72
  35. 44
  36. 78
  37. 32
  38. 78
  39. 26
  40. 78

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