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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 736 · 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: 71, 10, 29, 5? (a) 71 (b) 10 (c) 29 (d) 5
  2. 2.Which number is the odd one out: 32, 16, 41, 4? (a) 32 (b) 16 (c) 41 (d) 4
  3. 3.Which number is the odd one out: 68, 43, 23, 89? (a) 68 (b) 43 (c) 23 (d) 89
  4. 4.Which number is the odd one out: 2, 3, 61, 42? (a) 2 (b) 3 (c) 61 (d) 42
  5. 5.Which number is the odd one out: 96, 66, 29, 48? (a) 96 (b) 66 (c) 29 (d) 48
  6. 6.Which number is the odd one out: 23, 33, 97, 73? (a) 23 (b) 33 (c) 97 (d) 73
  7. 7.Which number is the odd one out: 43, 98, 23, 13? (a) 43 (b) 98 (c) 23 (d) 13
  8. 8.Which number is the odd one out: 24, 88, 28, 96? (a) 24 (b) 88 (c) 28 (d) 96
  9. 9.Which number is the odd one out: 61, 9, 31, 47? (a) 61 (b) 9 (c) 31 (d) 47
  10. 10.Which number is the odd one out: 95, 16, 4, 64? (a) 95 (b) 16 (c) 4 (d) 64
  11. 11.Which number is the odd one out: 64, 80, 16, 70? (a) 64 (b) 80 (c) 16 (d) 70
  12. 12.Which number is the odd one out: 35, 70, 29, 14? (a) 35 (b) 70 (c) 29 (d) 14
  13. 13.Which number is the odd one out: 6, 30, 66, 5? (a) 6 (b) 30 (c) 66 (d) 5
  14. 14.Which number is the odd one out: 96, 43, 67, 37? (a) 96 (b) 43 (c) 67 (d) 37
  15. 15.Which number is the odd one out: 61, 41, 19, 85? (a) 61 (b) 41 (c) 19 (d) 85
  16. 16.Which number is the odd one out: 31, 20, 19, 79? (a) 31 (b) 20 (c) 19 (d) 79
  17. 17.Which number is the odd one out: 96, 22, 88, 24? (a) 96 (b) 22 (c) 88 (d) 24
  18. 18.Which number is the odd one out: 53, 19, 6, 67? (a) 53 (b) 19 (c) 6 (d) 67
  19. 19.Which number is the odd one out: 11, 3, 33, 61? (a) 11 (b) 3 (c) 33 (d) 61
  20. 20.Which number is the odd one out: 90, 39, 5, 11? (a) 90 (b) 39 (c) 5 (d) 11
  21. 21.Which number is the odd one out: 38, 46, 82, 65? (a) 38 (b) 46 (c) 82 (d) 65
  22. 22.Which number is the odd one out: 50, 55, 28, 65? (a) 50 (b) 55 (c) 28 (d) 65
  23. 23.Which number is the odd one out: 78, 97, 2, 17? (a) 78 (b) 97 (c) 2 (d) 17
  24. 24.Which number is the odd one out: 27, 18, 11, 54? (a) 27 (b) 18 (c) 11 (d) 54
  25. 25.Which number is the odd one out: 73, 88, 17, 29? (a) 73 (b) 88 (c) 17 (d) 29
  26. 26.Which number is the odd one out: 23, 93, 61, 19? (a) 23 (b) 93 (c) 61 (d) 19
  27. 27.Which number is the odd one out: 19, 71, 37, 38? (a) 19 (b) 71 (c) 37 (d) 38
  28. 28.Which number is the odd one out: 97, 29, 71, 39? (a) 97 (b) 29 (c) 71 (d) 39
  29. 29.Which number is the odd one out: 11, 13, 17, 6? (a) 11 (b) 13 (c) 17 (d) 6
  30. 30.Which number is the odd one out: 75, 5, 53, 79? (a) 75 (b) 5 (c) 53 (d) 79
  31. 31.Which number is the odd one out: 93, 24, 71, 11? (a) 93 (b) 24 (c) 71 (d) 11
  32. 32.Which number is the odd one out: 32, 90, 40, 96? (a) 32 (b) 90 (c) 40 (d) 96
  33. 33.Which number is the odd one out: 61, 33, 83, 53? (a) 61 (b) 33 (c) 83 (d) 53
  34. 34.Which number is the odd one out: 27, 18, 12, 99? (a) 27 (b) 18 (c) 12 (d) 99
  35. 35.Which number is the odd one out: 59, 8, 67, 23? (a) 59 (b) 8 (c) 67 (d) 23
  36. 36.Which number is the odd one out: 36, 51, 9, 93? (a) 36 (b) 51 (c) 9 (d) 93
  37. 37.Which number is the odd one out: 89, 11, 40, 59? (a) 89 (b) 11 (c) 40 (d) 59
  38. 38.Which number is the odd one out: 89, 73, 45, 13? (a) 89 (b) 73 (c) 45 (d) 13
  39. 39.Which number is the odd one out: 32, 73, 29, 19? (a) 32 (b) 73 (c) 29 (d) 19
  40. 40.Which number is the odd one out: 56, 53, 71, 61? (a) 56 (b) 53 (c) 71 (d) 61

Answer key

  1. 10
  2. 41
  3. 68
  4. 42
  5. 29
  6. 33
  7. 98
  8. 28
  9. 9
  10. 95
  11. 70
  12. 29
  13. 5
  14. 96
  15. 85
  16. 20
  17. 22
  18. 6
  19. 33
  20. 90
  21. 65
  22. 28
  23. 78
  24. 11
  25. 88
  26. 93
  27. 38
  28. 39
  29. 6
  30. 75
  31. 24
  32. 90
  33. 33
  34. 12
  35. 8
  36. 36
  37. 40
  38. 45
  39. 32
  40. 56

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