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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 611 · 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: 73, 13, 7, 35? (a) 73 (b) 13 (c) 7 (d) 35
  2. 2.Which number is the odd one out: 3, 37, 51, 33? (a) 3 (b) 37 (c) 51 (d) 33
  3. 3.Which number is the odd one out: 49, 81, 70, 9? (a) 49 (b) 81 (c) 70 (d) 9
  4. 4.Which number is the odd one out: 5, 80, 32, 88? (a) 5 (b) 80 (c) 32 (d) 88
  5. 5.Which number is the odd one out: 65, 15, 78, 50? (a) 65 (b) 15 (c) 78 (d) 50
  6. 6.Which number is the odd one out: 43, 99, 3, 29? (a) 43 (b) 99 (c) 3 (d) 29
  7. 7.Which number is the odd one out: 23, 17, 37, 18? (a) 23 (b) 17 (c) 37 (d) 18
  8. 8.Which number is the odd one out: 4, 97, 43, 73? (a) 4 (b) 97 (c) 43 (d) 73
  9. 9.Which number is the odd one out: 11, 13, 54, 71? (a) 11 (b) 13 (c) 54 (d) 71
  10. 10.Which number is the odd one out: 80, 30, 88, 48? (a) 80 (b) 30 (c) 88 (d) 48
  11. 11.Which number is the odd one out: 37, 73, 33, 78? (a) 37 (b) 73 (c) 33 (d) 78
  12. 12.Which number is the odd one out: 12, 61, 3, 97? (a) 12 (b) 61 (c) 3 (d) 97
  13. 13.Which number is the odd one out: 53, 37, 13, 2? (a) 53 (b) 37 (c) 13 (d) 2
  14. 14.Which number is the odd one out: 71, 83, 19, 78? (a) 71 (b) 83 (c) 19 (d) 78
  15. 15.Which number is the odd one out: 9, 40, 4, 81? (a) 9 (b) 40 (c) 4 (d) 81
  16. 16.Which number is the odd one out: 35, 16, 77, 70? (a) 35 (b) 16 (c) 77 (d) 70
  17. 17.Which number is the odd one out: 13, 37, 53, 52? (a) 13 (b) 37 (c) 53 (d) 52
  18. 18.Which number is the odd one out: 31, 19, 89, 60? (a) 31 (b) 19 (c) 89 (d) 60
  19. 19.Which number is the odd one out: 89, 80, 79, 71? (a) 89 (b) 80 (c) 79 (d) 71
  20. 20.Which number is the odd one out: 43, 19, 11, 46? (a) 43 (b) 19 (c) 11 (d) 46
  21. 21.Which number is the odd one out: 79, 23, 67, 39? (a) 79 (b) 23 (c) 67 (d) 39
  22. 22.Which number is the odd one out: 43, 29, 11, 60? (a) 43 (b) 29 (c) 11 (d) 60
  23. 23.Which number is the odd one out: 83, 73, 61, 45? (a) 83 (b) 73 (c) 61 (d) 45
  24. 24.Which number is the odd one out: 55, 95, 85, 22? (a) 55 (b) 95 (c) 85 (d) 22
  25. 25.Which number is the odd one out: 47, 41, 80, 71? (a) 47 (b) 41 (c) 80 (d) 71
  26. 26.Which number is the odd one out: 97, 11, 68, 47? (a) 97 (b) 11 (c) 68 (d) 47
  27. 27.Which number is the odd one out: 37, 60, 19, 11? (a) 37 (b) 60 (c) 19 (d) 11
  28. 28.Which number is the odd one out: 83, 54, 29, 97? (a) 83 (b) 54 (c) 29 (d) 97
  29. 29.Which number is the odd one out: 16, 4, 64, 62? (a) 16 (b) 4 (c) 64 (d) 62
  30. 30.Which number is the odd one out: 88, 86, 8, 55? (a) 88 (b) 86 (c) 8 (d) 55
  31. 31.Which number is the odd one out: 11, 2, 48, 29? (a) 11 (b) 2 (c) 48 (d) 29
  32. 32.Which number is the odd one out: 8, 24, 48, 68? (a) 8 (b) 24 (c) 48 (d) 68
  33. 33.Which number is the odd one out: 83, 17, 52, 59? (a) 83 (b) 17 (c) 52 (d) 59
  34. 34.Which number is the odd one out: 77, 6, 93, 78? (a) 77 (b) 6 (c) 93 (d) 78
  35. 35.Which number is the odd one out: 48, 37, 24, 32? (a) 48 (b) 37 (c) 24 (d) 32
  36. 36.Which number is the odd one out: 32, 70, 56, 80? (a) 32 (b) 70 (c) 56 (d) 80
  37. 37.Which number is the odd one out: 55, 10, 52, 92? (a) 55 (b) 10 (c) 52 (d) 92
  38. 38.Which number is the odd one out: 62, 71, 79, 13? (a) 62 (b) 71 (c) 79 (d) 13
  39. 39.Which number is the odd one out: 11, 64, 89, 79? (a) 11 (b) 64 (c) 89 (d) 79
  40. 40.Which number is the odd one out: 23, 11, 17, 34? (a) 23 (b) 11 (c) 17 (d) 34

Answer key

  1. 35
  2. 37
  3. 70
  4. 5
  5. 78
  6. 99
  7. 18
  8. 4
  9. 54
  10. 30
  11. 78
  12. 12
  13. 2
  14. 78
  15. 40
  16. 16
  17. 52
  18. 60
  19. 80
  20. 46
  21. 39
  22. 60
  23. 45
  24. 22
  25. 80
  26. 68
  27. 60
  28. 54
  29. 62
  30. 55
  31. 48
  32. 68
  33. 52
  34. 77
  35. 37
  36. 70
  37. 55
  38. 62
  39. 64
  40. 34

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