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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 600 · 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: 65, 78, 99, 18? (a) 65 (b) 78 (c) 99 (d) 18
  2. 2.Which number is the odd one out: 13, 59, 70, 17? (a) 13 (b) 59 (c) 70 (d) 17
  3. 3.Which number is the odd one out: 73, 78, 2, 13? (a) 73 (b) 78 (c) 2 (d) 13
  4. 4.Which number is the odd one out: 43, 63, 41, 53? (a) 43 (b) 63 (c) 41 (d) 53
  5. 5.Which number is the odd one out: 91, 68, 32, 88? (a) 91 (b) 68 (c) 32 (d) 88
  6. 6.Which number is the odd one out: 8, 4, 88, 49? (a) 8 (b) 4 (c) 88 (d) 49
  7. 7.Which number is the odd one out: 13, 89, 44, 43? (a) 13 (b) 89 (c) 44 (d) 43
  8. 8.Which number is the odd one out: 32, 96, 24, 77? (a) 32 (b) 96 (c) 24 (d) 77
  9. 9.Which number is the odd one out: 75, 85, 11, 15? (a) 75 (b) 85 (c) 11 (d) 15
  10. 10.Which number is the odd one out: 42, 97, 2, 37? (a) 42 (b) 97 (c) 2 (d) 37
  11. 11.Which number is the odd one out: 59, 73, 9, 79? (a) 59 (b) 73 (c) 9 (d) 79
  12. 12.Which number is the odd one out: 55, 4, 64, 16? (a) 55 (b) 4 (c) 64 (d) 16
  13. 13.Which number is the odd one out: 41, 43, 74, 59? (a) 41 (b) 43 (c) 74 (d) 59
  14. 14.Which number is the odd one out: 28, 44, 49, 76? (a) 28 (b) 44 (c) 49 (d) 76
  15. 15.Which number is the odd one out: 13, 43, 72, 71? (a) 13 (b) 43 (c) 72 (d) 71
  16. 16.Which number is the odd one out: 13, 53, 9, 41? (a) 13 (b) 53 (c) 9 (d) 41
  17. 17.Which number is the odd one out: 53, 44, 89, 59? (a) 53 (b) 44 (c) 89 (d) 59
  18. 18.Which number is the odd one out: 97, 66, 83, 67? (a) 97 (b) 66 (c) 83 (d) 67
  19. 19.Which number is the odd one out: 37, 13, 25, 89? (a) 37 (b) 13 (c) 25 (d) 89
  20. 20.Which number is the odd one out: 81, 9, 49, 91? (a) 81 (b) 9 (c) 49 (d) 91
  21. 21.Which number is the odd one out: 17, 59, 86, 31? (a) 17 (b) 59 (c) 86 (d) 31
  22. 22.Which number is the odd one out: 79, 29, 19, 12? (a) 79 (b) 29 (c) 19 (d) 12
  23. 23.Which number is the odd one out: 17, 73, 32, 41? (a) 17 (b) 73 (c) 32 (d) 41
  24. 24.Which number is the odd one out: 61, 18, 3, 43? (a) 61 (b) 18 (c) 3 (d) 43
  25. 25.Which number is the odd one out: 41, 37, 56, 2? (a) 41 (b) 37 (c) 56 (d) 2
  26. 26.Which number is the odd one out: 9, 20, 81, 4? (a) 9 (b) 20 (c) 81 (d) 4
  27. 27.Which number is the odd one out: 11, 13, 37, 98? (a) 11 (b) 13 (c) 37 (d) 98
  28. 28.Which number is the odd one out: 30, 7, 54, 90? (a) 30 (b) 7 (c) 54 (d) 90
  29. 29.Which number is the odd one out: 53, 2, 30, 79? (a) 53 (b) 2 (c) 30 (d) 79
  30. 30.Which number is the odd one out: 17, 19, 54, 13? (a) 17 (b) 19 (c) 54 (d) 13
  31. 31.Which number is the odd one out: 96, 16, 6, 64? (a) 96 (b) 16 (c) 6 (d) 64
  32. 32.Which number is the odd one out: 93, 3, 26, 29? (a) 93 (b) 3 (c) 26 (d) 29
  33. 33.Which number is the odd one out: 83, 97, 77, 31? (a) 83 (b) 97 (c) 77 (d) 31
  34. 34.Which number is the odd one out: 61, 2, 47, 16? (a) 61 (b) 2 (c) 47 (d) 16
  35. 35.Which number is the odd one out: 19, 13, 73, 38? (a) 19 (b) 13 (c) 73 (d) 38
  36. 36.Which number is the odd one out: 55, 59, 70, 31? (a) 55 (b) 59 (c) 70 (d) 31
  37. 37.Which number is the odd one out: 56, 9, 28, 88? (a) 56 (b) 9 (c) 28 (d) 88
  38. 38.Which number is the odd one out: 64, 14, 56, 16? (a) 64 (b) 14 (c) 56 (d) 16
  39. 39.Which number is the odd one out: 29, 67, 59, 90? (a) 29 (b) 67 (c) 59 (d) 90
  40. 40.Which number is the odd one out: 36, 59, 37, 79? (a) 36 (b) 59 (c) 37 (d) 79

Answer key

  1. 65
  2. 70
  3. 78
  4. 63
  5. 91
  6. 49
  7. 44
  8. 77
  9. 11
  10. 42
  11. 9
  12. 55
  13. 74
  14. 49
  15. 72
  16. 9
  17. 44
  18. 66
  19. 25
  20. 91
  21. 86
  22. 12
  23. 32
  24. 18
  25. 56
  26. 20
  27. 98
  28. 7
  29. 30
  30. 54
  31. 6
  32. 26
  33. 77
  34. 16
  35. 38
  36. 70
  37. 9
  38. 14
  39. 90
  40. 36

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