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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 937 · 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: 90, 78, 18, 5? (a) 90 (b) 78 (c) 18 (d) 5
  2. 2.Which number is the odd one out: 55, 47, 23, 79? (a) 55 (b) 47 (c) 23 (d) 79
  3. 3.Which number is the odd one out: 23, 97, 17, 52? (a) 23 (b) 97 (c) 17 (d) 52
  4. 4.Which number is the odd one out: 78, 13, 29, 79? (a) 78 (b) 13 (c) 29 (d) 79
  5. 5.Which number is the odd one out: 16, 4, 46, 64? (a) 16 (b) 4 (c) 46 (d) 64
  6. 6.Which number is the odd one out: 56, 19, 2, 37? (a) 56 (b) 19 (c) 2 (d) 37
  7. 7.Which number is the odd one out: 64, 38, 16, 8? (a) 64 (b) 38 (c) 16 (d) 8
  8. 8.Which number is the odd one out: 16, 4, 78, 64? (a) 16 (b) 4 (c) 78 (d) 64
  9. 9.Which number is the odd one out: 39, 93, 97, 57? (a) 39 (b) 93 (c) 97 (d) 57
  10. 10.Which number is the odd one out: 50, 15, 55, 24? (a) 50 (b) 15 (c) 55 (d) 24
  11. 11.Which number is the odd one out: 15, 35, 84, 95? (a) 15 (b) 35 (c) 84 (d) 95
  12. 12.Which number is the odd one out: 31, 23, 69, 29? (a) 31 (b) 23 (c) 69 (d) 29
  13. 13.Which number is the odd one out: 48, 80, 70, 24? (a) 48 (b) 80 (c) 70 (d) 24
  14. 14.Which number is the odd one out: 36, 19, 2, 13? (a) 36 (b) 19 (c) 2 (d) 13
  15. 15.Which number is the odd one out: 55, 20, 29, 13? (a) 55 (b) 20 (c) 29 (d) 13
  16. 16.Which number is the odd one out: 53, 86, 17, 41? (a) 53 (b) 86 (c) 17 (d) 41
  17. 17.Which number is the odd one out: 89, 83, 65, 31? (a) 89 (b) 83 (c) 65 (d) 31
  18. 18.Which number is the odd one out: 88, 2, 43, 29? (a) 88 (b) 2 (c) 43 (d) 29
  19. 19.Which number is the odd one out: 57, 41, 53, 17? (a) 57 (b) 41 (c) 53 (d) 17
  20. 20.Which number is the odd one out: 37, 59, 62, 43? (a) 37 (b) 59 (c) 62 (d) 43
  21. 21.Which number is the odd one out: 3, 63, 11, 61? (a) 3 (b) 63 (c) 11 (d) 61
  22. 22.Which number is the odd one out: 89, 71, 31, 81? (a) 89 (b) 71 (c) 31 (d) 81
  23. 23.Which number is the odd one out: 65, 47, 79, 97? (a) 65 (b) 47 (c) 79 (d) 97
  24. 24.Which number is the odd one out: 39, 6, 55, 78? (a) 39 (b) 6 (c) 55 (d) 78
  25. 25.Which number is the odd one out: 15, 95, 39, 87? (a) 15 (b) 95 (c) 39 (d) 87
  26. 26.Which number is the odd one out: 53, 57, 67, 72? (a) 53 (b) 57 (c) 67 (d) 72
  27. 27.Which number is the odd one out: 67, 22, 37, 59? (a) 67 (b) 22 (c) 37 (d) 59
  28. 28.Which number is the odd one out: 31, 7, 56, 71? (a) 31 (b) 7 (c) 56 (d) 71
  29. 29.Which number is the odd one out: 59, 23, 22, 47? (a) 59 (b) 23 (c) 22 (d) 47
  30. 30.Which number is the odd one out: 79, 43, 2, 76? (a) 79 (b) 43 (c) 2 (d) 76
  31. 31.Which number is the odd one out: 95, 99, 45, 55? (a) 95 (b) 99 (c) 45 (d) 55
  32. 32.Which number is the odd one out: 2, 11, 6, 37? (a) 2 (b) 11 (c) 6 (d) 37
  33. 33.Which number is the odd one out: 31, 68, 2, 61? (a) 31 (b) 68 (c) 2 (d) 61
  34. 34.Which number is the odd one out: 51, 86, 34, 26? (a) 51 (b) 86 (c) 34 (d) 26
  35. 35.Which number is the odd one out: 37, 30, 83, 3? (a) 37 (b) 30 (c) 83 (d) 3
  36. 36.Which number is the odd one out: 23, 8, 4, 16? (a) 23 (b) 8 (c) 4 (d) 16
  37. 37.Which number is the odd one out: 93, 83, 2, 51? (a) 93 (b) 83 (c) 2 (d) 51
  38. 38.Which number is the odd one out: 59, 73, 89, 62? (a) 59 (b) 73 (c) 89 (d) 62
  39. 39.Which number is the odd one out: 79, 61, 13, 96? (a) 79 (b) 61 (c) 13 (d) 96
  40. 40.Which number is the odd one out: 19, 36, 83, 27? (a) 19 (b) 36 (c) 83 (d) 27

Answer key

  1. 5
  2. 55
  3. 52
  4. 78
  5. 46
  6. 56
  7. 38
  8. 78
  9. 97
  10. 24
  11. 84
  12. 69
  13. 70
  14. 36
  15. 20
  16. 86
  17. 65
  18. 88
  19. 57
  20. 62
  21. 63
  22. 81
  23. 65
  24. 55
  25. 95
  26. 72
  27. 22
  28. 56
  29. 22
  30. 76
  31. 99
  32. 6
  33. 68
  34. 51
  35. 30
  36. 23
  37. 2
  38. 62
  39. 96
  40. 36

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