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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 889 · 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: 20, 97, 17, 31? (a) 20 (b) 97 (c) 17 (d) 31
  2. 2.Which number is the odd one out: 6, 18, 54, 13? (a) 6 (b) 18 (c) 54 (d) 13
  3. 3.Which number is the odd one out: 8, 47, 61, 83? (a) 8 (b) 47 (c) 61 (d) 83
  4. 4.Which number is the odd one out: 47, 72, 79, 61? (a) 47 (b) 72 (c) 79 (d) 61
  5. 5.Which number is the odd one out: 6, 89, 43, 73? (a) 6 (b) 89 (c) 43 (d) 73
  6. 6.Which number is the odd one out: 32, 40, 36, 80? (a) 32 (b) 40 (c) 36 (d) 80
  7. 7.Which number is the odd one out: 45, 66, 54, 6? (a) 45 (b) 66 (c) 54 (d) 6
  8. 8.Which number is the odd one out: 31, 79, 11, 39? (a) 31 (b) 79 (c) 11 (d) 39
  9. 9.Which number is the odd one out: 83, 61, 95, 5? (a) 83 (b) 61 (c) 95 (d) 5
  10. 10.Which number is the odd one out: 41, 98, 79, 61? (a) 41 (b) 98 (c) 79 (d) 61
  11. 11.Which number is the odd one out: 31, 19, 6, 71? (a) 31 (b) 19 (c) 6 (d) 71
  12. 12.Which number is the odd one out: 81, 96, 54, 9? (a) 81 (b) 96 (c) 54 (d) 9
  13. 13.Which number is the odd one out: 47, 16, 31, 71? (a) 47 (b) 16 (c) 31 (d) 71
  14. 14.Which number is the odd one out: 5, 17, 45, 89? (a) 5 (b) 17 (c) 45 (d) 89
  15. 15.Which number is the odd one out: 48, 7, 24, 12? (a) 48 (b) 7 (c) 24 (d) 12
  16. 16.Which number is the odd one out: 27, 7, 63, 99? (a) 27 (b) 7 (c) 63 (d) 99
  17. 17.Which number is the odd one out: 53, 71, 2, 34? (a) 53 (b) 71 (c) 2 (d) 34
  18. 18.Which number is the odd one out: 25, 45, 65, 36? (a) 25 (b) 45 (c) 65 (d) 36
  19. 19.Which number is the odd one out: 73, 41, 47, 9? (a) 73 (b) 41 (c) 47 (d) 9
  20. 20.Which number is the odd one out: 11, 50, 61, 37? (a) 11 (b) 50 (c) 61 (d) 37
  21. 21.Which number is the odd one out: 31, 67, 53, 57? (a) 31 (b) 67 (c) 53 (d) 57
  22. 22.Which number is the odd one out: 35, 83, 7, 79? (a) 35 (b) 83 (c) 7 (d) 79
  23. 23.Which number is the odd one out: 58, 61, 37, 73? (a) 58 (b) 61 (c) 37 (d) 73
  24. 24.Which number is the odd one out: 5, 79, 67, 55? (a) 5 (b) 79 (c) 67 (d) 55
  25. 25.Which number is the odd one out: 19, 22, 83, 17? (a) 19 (b) 22 (c) 83 (d) 17
  26. 26.Which number is the odd one out: 57, 9, 81, 19? (a) 57 (b) 9 (c) 81 (d) 19
  27. 27.Which number is the odd one out: 55, 89, 5, 13? (a) 55 (b) 89 (c) 5 (d) 13
  28. 28.Which number is the odd one out: 11, 73, 61, 4? (a) 11 (b) 73 (c) 61 (d) 4
  29. 29.Which number is the odd one out: 5, 10, 19, 50? (a) 5 (b) 10 (c) 19 (d) 50
  30. 30.Which number is the odd one out: 41, 66, 23, 53? (a) 41 (b) 66 (c) 23 (d) 53
  31. 31.Which number is the odd one out: 79, 11, 83, 25? (a) 79 (b) 11 (c) 83 (d) 25
  32. 32.Which number is the odd one out: 13, 78, 61, 41? (a) 13 (b) 78 (c) 61 (d) 41
  33. 33.Which number is the odd one out: 89, 41, 48, 83? (a) 89 (b) 41 (c) 48 (d) 83
  34. 34.Which number is the odd one out: 98, 15, 21, 14? (a) 98 (b) 15 (c) 21 (d) 14
  35. 35.Which number is the odd one out: 16, 92, 4, 64? (a) 16 (b) 92 (c) 4 (d) 64
  36. 36.Which number is the odd one out: 93, 15, 43, 75? (a) 93 (b) 15 (c) 43 (d) 75
  37. 37.Which number is the odd one out: 2, 23, 4, 11? (a) 2 (b) 23 (c) 4 (d) 11
  38. 38.Which number is the odd one out: 38, 11, 92, 76? (a) 38 (b) 11 (c) 92 (d) 76
  39. 39.Which number is the odd one out: 98, 11, 73, 97? (a) 98 (b) 11 (c) 73 (d) 97
  40. 40.Which number is the odd one out: 37, 17, 11, 38? (a) 37 (b) 17 (c) 11 (d) 38

Answer key

  1. 20
  2. 13
  3. 8
  4. 72
  5. 6
  6. 36
  7. 45
  8. 39
  9. 95
  10. 98
  11. 6
  12. 96
  13. 16
  14. 45
  15. 7
  16. 7
  17. 34
  18. 36
  19. 9
  20. 50
  21. 57
  22. 35
  23. 58
  24. 55
  25. 22
  26. 19
  27. 55
  28. 4
  29. 19
  30. 66
  31. 25
  32. 78
  33. 48
  34. 15
  35. 92
  36. 43
  37. 4
  38. 11
  39. 98
  40. 38

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