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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 285 · 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, 2, 80, 40? (a) 20 (b) 2 (c) 80 (d) 40
  2. 2.Which number is the odd one out: 2, 47, 52, 83? (a) 2 (b) 47 (c) 52 (d) 83
  3. 3.Which number is the odd one out: 51, 16, 32, 64? (a) 51 (b) 16 (c) 32 (d) 64
  4. 4.Which number is the odd one out: 13, 89, 20, 47? (a) 13 (b) 89 (c) 20 (d) 47
  5. 5.Which number is the odd one out: 32, 37, 48, 24? (a) 32 (b) 37 (c) 48 (d) 24
  6. 6.Which number is the odd one out: 43, 90, 99, 11? (a) 43 (b) 90 (c) 99 (d) 11
  7. 7.Which number is the odd one out: 18, 43, 53, 37? (a) 18 (b) 43 (c) 53 (d) 37
  8. 8.Which number is the odd one out: 43, 54, 17, 41? (a) 43 (b) 54 (c) 17 (d) 41
  9. 9.Which number is the odd one out: 15, 18, 90, 47? (a) 15 (b) 18 (c) 90 (d) 47
  10. 10.Which number is the odd one out: 68, 8, 32, 85? (a) 68 (b) 8 (c) 32 (d) 85
  11. 11.Which number is the odd one out: 6, 8, 68, 32? (a) 6 (b) 8 (c) 68 (d) 32
  12. 12.Which number is the odd one out: 96, 77, 88, 48? (a) 96 (b) 77 (c) 88 (d) 48
  13. 13.Which number is the odd one out: 13, 8, 26, 32? (a) 13 (b) 8 (c) 26 (d) 32
  14. 14.Which number is the odd one out: 67, 59, 11, 70? (a) 67 (b) 59 (c) 11 (d) 70
  15. 15.Which number is the odd one out: 23, 19, 44, 97? (a) 23 (b) 19 (c) 44 (d) 97
  16. 16.Which number is the odd one out: 89, 55, 29, 19? (a) 89 (b) 55 (c) 29 (d) 19
  17. 17.Which number is the odd one out: 2, 86, 13, 59? (a) 2 (b) 86 (c) 13 (d) 59
  18. 18.Which number is the odd one out: 72, 27, 83, 41? (a) 72 (b) 27 (c) 83 (d) 41
  19. 19.Which number is the odd one out: 89, 17, 32, 29? (a) 89 (b) 17 (c) 32 (d) 29
  20. 20.Which number is the odd one out: 11, 63, 53, 59? (a) 11 (b) 63 (c) 53 (d) 59
  21. 21.Which number is the odd one out: 47, 73, 79, 78? (a) 47 (b) 73 (c) 79 (d) 78
  22. 22.Which number is the odd one out: 91, 7, 89, 37? (a) 91 (b) 7 (c) 89 (d) 37
  23. 23.Which number is the odd one out: 24, 48, 95, 88? (a) 24 (b) 48 (c) 95 (d) 88
  24. 24.Which number is the odd one out: 96, 48, 29, 78? (a) 96 (b) 48 (c) 29 (d) 78
  25. 25.Which number is the odd one out: 53, 19, 71, 54? (a) 53 (b) 19 (c) 71 (d) 54
  26. 26.Which number is the odd one out: 72, 83, 59, 43? (a) 72 (b) 83 (c) 59 (d) 43
  27. 27.Which number is the odd one out: 67, 13, 57, 89? (a) 67 (b) 13 (c) 57 (d) 89
  28. 28.Which number is the odd one out: 3, 17, 42, 11? (a) 3 (b) 17 (c) 42 (d) 11
  29. 29.Which number is the odd one out: 54, 4, 64, 16? (a) 54 (b) 4 (c) 64 (d) 16
  30. 30.Which number is the odd one out: 78, 67, 3, 29? (a) 78 (b) 67 (c) 3 (d) 29
  31. 31.Which number is the odd one out: 74, 43, 79, 31? (a) 74 (b) 43 (c) 79 (d) 31
  32. 32.Which number is the odd one out: 17, 21, 59, 11? (a) 17 (b) 21 (c) 59 (d) 11
  33. 33.Which number is the odd one out: 13, 65, 71, 29? (a) 13 (b) 65 (c) 71 (d) 29
  34. 34.Which number is the odd one out: 50, 2, 89, 97? (a) 50 (b) 2 (c) 89 (d) 97
  35. 35.Which number is the odd one out: 40, 12, 96, 65? (a) 40 (b) 12 (c) 96 (d) 65
  36. 36.Which number is the odd one out: 53, 4, 16, 8? (a) 53 (b) 4 (c) 16 (d) 8
  37. 37.Which number is the odd one out: 77, 41, 37, 13? (a) 77 (b) 41 (c) 37 (d) 13
  38. 38.Which number is the odd one out: 54, 90, 40, 72? (a) 54 (b) 90 (c) 40 (d) 72
  39. 39.Which number is the odd one out: 7, 91, 29, 77? (a) 7 (b) 91 (c) 29 (d) 77
  40. 40.Which number is the odd one out: 17, 31, 90, 23? (a) 17 (b) 31 (c) 90 (d) 23

Answer key

  1. 2
  2. 52
  3. 51
  4. 20
  5. 37
  6. 90
  7. 18
  8. 54
  9. 47
  10. 85
  11. 6
  12. 77
  13. 13
  14. 70
  15. 44
  16. 55
  17. 86
  18. 72
  19. 32
  20. 63
  21. 78
  22. 91
  23. 95
  24. 29
  25. 54
  26. 72
  27. 57
  28. 42
  29. 54
  30. 78
  31. 74
  32. 21
  33. 65
  34. 50
  35. 65
  36. 53
  37. 77
  38. 40
  39. 29
  40. 90

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