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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 717 · 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: 89, 35, 13, 11? (a) 89 (b) 35 (c) 13 (d) 11
  2. 2.Which number is the odd one out: 40, 32, 62, 80? (a) 40 (b) 32 (c) 62 (d) 80
  3. 3.Which number is the odd one out: 29, 23, 9, 79? (a) 29 (b) 23 (c) 9 (d) 79
  4. 4.Which number is the odd one out: 19, 83, 64, 23? (a) 19 (b) 83 (c) 64 (d) 23
  5. 5.Which number is the odd one out: 67, 70, 47, 97? (a) 67 (b) 70 (c) 47 (d) 97
  6. 6.Which number is the odd one out: 11, 3, 90, 53? (a) 11 (b) 3 (c) 90 (d) 53
  7. 7.Which number is the odd one out: 6, 51, 59, 19? (a) 6 (b) 51 (c) 59 (d) 19
  8. 8.Which number is the odd one out: 19, 55, 41, 23? (a) 19 (b) 55 (c) 41 (d) 23
  9. 9.Which number is the odd one out: 29, 61, 21, 17? (a) 29 (b) 61 (c) 21 (d) 17
  10. 10.Which number is the odd one out: 96, 24, 8, 55? (a) 96 (b) 24 (c) 8 (d) 55
  11. 11.Which number is the odd one out: 19, 79, 49, 89? (a) 19 (b) 79 (c) 49 (d) 89
  12. 12.Which number is the odd one out: 29, 50, 17, 13? (a) 29 (b) 50 (c) 17 (d) 13
  13. 13.Which number is the odd one out: 79, 11, 23, 64? (a) 79 (b) 11 (c) 23 (d) 64
  14. 14.Which number is the odd one out: 29, 23, 86, 89? (a) 29 (b) 23 (c) 86 (d) 89
  15. 15.Which number is the odd one out: 24, 8, 96, 26? (a) 24 (b) 8 (c) 96 (d) 26
  16. 16.Which number is the odd one out: 69, 79, 47, 97? (a) 69 (b) 79 (c) 47 (d) 97
  17. 17.Which number is the odd one out: 97, 71, 23, 55? (a) 97 (b) 71 (c) 23 (d) 55
  18. 18.Which number is the odd one out: 73, 59, 17, 42? (a) 73 (b) 59 (c) 17 (d) 42
  19. 19.Which number is the odd one out: 15, 18, 27, 90? (a) 15 (b) 18 (c) 27 (d) 90
  20. 20.Which number is the odd one out: 31, 11, 79, 58? (a) 31 (b) 11 (c) 79 (d) 58
  21. 21.Which number is the odd one out: 51, 93, 87, 23? (a) 51 (b) 93 (c) 87 (d) 23
  22. 22.Which number is the odd one out: 4, 67, 64, 16? (a) 4 (b) 67 (c) 64 (d) 16
  23. 23.Which number is the odd one out: 17, 37, 88, 29? (a) 17 (b) 37 (c) 88 (d) 29
  24. 24.Which number is the odd one out: 89, 29, 25, 79? (a) 89 (b) 29 (c) 25 (d) 79
  25. 25.Which number is the odd one out: 8, 96, 24, 19? (a) 8 (b) 96 (c) 24 (d) 19
  26. 26.Which number is the odd one out: 17, 43, 10, 2? (a) 17 (b) 43 (c) 10 (d) 2
  27. 27.Which number is the odd one out: 43, 11, 99, 73? (a) 43 (b) 11 (c) 99 (d) 73
  28. 28.Which number is the odd one out: 65, 13, 40, 80? (a) 65 (b) 13 (c) 40 (d) 80
  29. 29.Which number is the odd one out: 61, 23, 79, 24? (a) 61 (b) 23 (c) 79 (d) 24
  30. 30.Which number is the odd one out: 29, 79, 2, 52? (a) 29 (b) 79 (c) 2 (d) 52
  31. 31.Which number is the odd one out: 11, 20, 47, 59? (a) 11 (b) 20 (c) 47 (d) 59
  32. 32.Which number is the odd one out: 29, 67, 93, 17? (a) 29 (b) 67 (c) 93 (d) 17
  33. 33.Which number is the odd one out: 58, 47, 41, 37? (a) 58 (b) 47 (c) 41 (d) 37
  34. 34.Which number is the odd one out: 18, 19, 61, 11? (a) 18 (b) 19 (c) 61 (d) 11
  35. 35.Which number is the odd one out: 19, 2, 23, 68? (a) 19 (b) 2 (c) 23 (d) 68
  36. 36.Which number is the odd one out: 90, 43, 61, 11? (a) 90 (b) 43 (c) 61 (d) 11
  37. 37.Which number is the odd one out: 2, 17, 42, 97? (a) 2 (b) 17 (c) 42 (d) 97
  38. 38.Which number is the odd one out: 42, 23, 31, 21? (a) 42 (b) 23 (c) 31 (d) 21
  39. 39.Which number is the odd one out: 45, 27, 55, 33? (a) 45 (b) 27 (c) 55 (d) 33
  40. 40.Which number is the odd one out: 18, 24, 8, 88? (a) 18 (b) 24 (c) 8 (d) 88

Answer key

  1. 35
  2. 62
  3. 9
  4. 64
  5. 70
  6. 90
  7. 6
  8. 55
  9. 21
  10. 55
  11. 49
  12. 50
  13. 64
  14. 86
  15. 26
  16. 69
  17. 55
  18. 42
  19. 15
  20. 58
  21. 23
  22. 67
  23. 88
  24. 25
  25. 19
  26. 10
  27. 99
  28. 13
  29. 24
  30. 52
  31. 20
  32. 93
  33. 58
  34. 18
  35. 68
  36. 90
  37. 42
  38. 42
  39. 55
  40. 18

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