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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 12 · 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: 45, 64, 16, 4? (a) 45 (b) 64 (c) 16 (d) 4
  2. 2.Which number is the odd one out: 14, 9, 98, 21? (a) 14 (b) 9 (c) 98 (d) 21
  3. 3.Which number is the odd one out: 61, 3, 66, 31? (a) 61 (b) 3 (c) 66 (d) 31
  4. 4.Which number is the odd one out: 13, 55, 41, 83? (a) 13 (b) 55 (c) 41 (d) 83
  5. 5.Which number is the odd one out: 37, 55, 47, 53? (a) 37 (b) 55 (c) 47 (d) 53
  6. 6.Which number is the odd one out: 60, 20, 23, 30? (a) 60 (b) 20 (c) 23 (d) 30
  7. 7.Which number is the odd one out: 15, 49, 85, 75? (a) 15 (b) 49 (c) 85 (d) 75
  8. 8.Which number is the odd one out: 41, 99, 97, 73? (a) 41 (b) 99 (c) 97 (d) 73
  9. 9.Which number is the odd one out: 13, 85, 97, 71? (a) 13 (b) 85 (c) 97 (d) 71
  10. 10.Which number is the odd one out: 11, 15, 23, 73? (a) 11 (b) 15 (c) 23 (d) 73
  11. 11.Which number is the odd one out: 78, 47, 53, 89? (a) 78 (b) 47 (c) 53 (d) 89
  12. 12.Which number is the odd one out: 31, 53, 98, 89? (a) 31 (b) 53 (c) 98 (d) 89
  13. 13.Which number is the odd one out: 31, 58, 62, 94? (a) 31 (b) 58 (c) 62 (d) 94
  14. 14.Which number is the odd one out: 54, 53, 83, 29? (a) 54 (b) 53 (c) 83 (d) 29
  15. 15.Which number is the odd one out: 8, 32, 26, 95? (a) 8 (b) 32 (c) 26 (d) 95
  16. 16.Which number is the odd one out: 37, 9, 3, 97? (a) 37 (b) 9 (c) 3 (d) 97
  17. 17.Which number is the odd one out: 22, 8, 20, 40? (a) 22 (b) 8 (c) 20 (d) 40
  18. 18.Which number is the odd one out: 83, 58, 41, 23? (a) 83 (b) 58 (c) 41 (d) 23
  19. 19.Which number is the odd one out: 17, 89, 6, 19? (a) 17 (b) 89 (c) 6 (d) 19
  20. 20.Which number is the odd one out: 72, 15, 85, 65? (a) 72 (b) 15 (c) 85 (d) 65
  21. 21.Which number is the odd one out: 99, 9, 81, 7? (a) 99 (b) 9 (c) 81 (d) 7
  22. 22.Which number is the odd one out: 39, 31, 89, 37? (a) 39 (b) 31 (c) 89 (d) 37
  23. 23.Which number is the odd one out: 23, 93, 73, 83? (a) 23 (b) 93 (c) 73 (d) 83
  24. 24.Which number is the odd one out: 61, 17, 36, 13? (a) 61 (b) 17 (c) 36 (d) 13
  25. 25.Which number is the odd one out: 53, 92, 31, 61? (a) 53 (b) 92 (c) 31 (d) 61
  26. 26.Which number is the odd one out: 78, 73, 97, 83? (a) 78 (b) 73 (c) 97 (d) 83
  27. 27.Which number is the odd one out: 26, 97, 79, 2? (a) 26 (b) 97 (c) 79 (d) 2
  28. 28.Which number is the odd one out: 70, 89, 47, 53? (a) 70 (b) 89 (c) 47 (d) 53
  29. 29.Which number is the odd one out: 59, 17, 41, 62? (a) 59 (b) 17 (c) 41 (d) 62
  30. 30.Which number is the odd one out: 74, 41, 79, 29? (a) 74 (b) 41 (c) 79 (d) 29
  31. 31.Which number is the odd one out: 11, 43, 63, 17? (a) 11 (b) 43 (c) 63 (d) 17
  32. 32.Which number is the odd one out: 79, 65, 37, 13? (a) 79 (b) 65 (c) 37 (d) 13
  33. 33.Which number is the odd one out: 95, 55, 50, 92? (a) 95 (b) 55 (c) 50 (d) 92
  34. 34.Which number is the odd one out: 4, 16, 33, 64? (a) 4 (b) 16 (c) 33 (d) 64
  35. 35.Which number is the odd one out: 68, 92, 76, 67? (a) 68 (b) 92 (c) 76 (d) 67
  36. 36.Which number is the odd one out: 71, 63, 79, 3? (a) 71 (b) 63 (c) 79 (d) 3
  37. 37.Which number is the odd one out: 2, 19, 37, 76? (a) 2 (b) 19 (c) 37 (d) 76
  38. 38.Which number is the odd one out: 57, 53, 97, 71? (a) 57 (b) 53 (c) 97 (d) 71
  39. 39.Which number is the odd one out: 40, 60, 32, 18? (a) 40 (b) 60 (c) 32 (d) 18
  40. 40.Which number is the odd one out: 61, 80, 31, 67? (a) 61 (b) 80 (c) 31 (d) 67

Answer key

  1. 45
  2. 9
  3. 66
  4. 55
  5. 55
  6. 23
  7. 49
  8. 99
  9. 85
  10. 15
  11. 78
  12. 98
  13. 31
  14. 54
  15. 95
  16. 9
  17. 22
  18. 58
  19. 6
  20. 72
  21. 7
  22. 39
  23. 93
  24. 36
  25. 92
  26. 78
  27. 26
  28. 70
  29. 62
  30. 74
  31. 63
  32. 65
  33. 92
  34. 33
  35. 67
  36. 63
  37. 76
  38. 57
  39. 18
  40. 80

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