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Odd One Out Numbers Worksheet

Logical reasoning lesson 3: Odd one out: numbers · Set 158 · 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: 13, 42, 89, 43? (a) 13 (b) 42 (c) 89 (d) 43
  2. 2.Which number is the odd one out: 8, 32, 96, 84? (a) 8 (b) 32 (c) 96 (d) 84
  3. 3.Which number is the odd one out: 14, 77, 90, 21? (a) 14 (b) 77 (c) 90 (d) 21
  4. 4.Which number is the odd one out: 97, 51, 37, 61? (a) 97 (b) 51 (c) 37 (d) 61
  5. 5.Which number is the odd one out: 70, 7, 89, 17? (a) 70 (b) 7 (c) 89 (d) 17
  6. 6.Which number is the odd one out: 18, 71, 37, 19? (a) 18 (b) 71 (c) 37 (d) 19
  7. 7.Which number is the odd one out: 24, 14, 32, 48? (a) 24 (b) 14 (c) 32 (d) 48
  8. 8.Which number is the odd one out: 67, 31, 73, 40? (a) 67 (b) 31 (c) 73 (d) 40
  9. 9.Which number is the odd one out: 15, 47, 61, 17? (a) 15 (b) 47 (c) 61 (d) 17
  10. 10.Which number is the odd one out: 97, 48, 13, 11? (a) 97 (b) 48 (c) 13 (d) 11
  11. 11.Which number is the odd one out: 50, 15, 3, 10? (a) 50 (b) 15 (c) 3 (d) 10
  12. 12.Which number is the odd one out: 23, 63, 43, 97? (a) 23 (b) 63 (c) 43 (d) 97
  13. 13.Which number is the odd one out: 31, 11, 25, 37? (a) 31 (b) 11 (c) 25 (d) 37
  14. 14.Which number is the odd one out: 37, 63, 83, 23? (a) 37 (b) 63 (c) 83 (d) 23
  15. 15.Which number is the odd one out: 84, 73, 19, 59? (a) 84 (b) 73 (c) 19 (d) 59
  16. 16.Which number is the odd one out: 55, 92, 29, 5? (a) 55 (b) 92 (c) 29 (d) 5
  17. 17.Which number is the odd one out: 70, 77, 15, 14? (a) 70 (b) 77 (c) 15 (d) 14
  18. 18.Which number is the odd one out: 11, 13, 17, 34? (a) 11 (b) 13 (c) 17 (d) 34
  19. 19.Which number is the odd one out: 46, 65, 10, 55? (a) 46 (b) 65 (c) 10 (d) 55
  20. 20.Which number is the odd one out: 73, 84, 43, 61? (a) 73 (b) 84 (c) 43 (d) 61
  21. 21.Which number is the odd one out: 29, 59, 61, 95? (a) 29 (b) 59 (c) 61 (d) 95
  22. 22.Which number is the odd one out: 18, 13, 61, 31? (a) 18 (b) 13 (c) 61 (d) 31
  23. 23.Which number is the odd one out: 53, 25, 11, 73? (a) 53 (b) 25 (c) 11 (d) 73
  24. 24.Which number is the odd one out: 68, 43, 23, 37? (a) 68 (b) 43 (c) 23 (d) 37
  25. 25.Which number is the odd one out: 26, 55, 15, 33? (a) 26 (b) 55 (c) 15 (d) 33
  26. 26.Which number is the odd one out: 36, 71, 61, 31? (a) 36 (b) 71 (c) 61 (d) 31
  27. 27.Which number is the odd one out: 58, 2, 31, 29? (a) 58 (b) 2 (c) 31 (d) 29
  28. 28.Which number is the odd one out: 19, 23, 90, 3? (a) 19 (b) 23 (c) 90 (d) 3
  29. 29.Which number is the odd one out: 90, 72, 95, 96? (a) 90 (b) 72 (c) 95 (d) 96
  30. 30.Which number is the odd one out: 74, 23, 71, 2? (a) 74 (b) 23 (c) 71 (d) 2
  31. 31.Which number is the odd one out: 37, 47, 15, 31? (a) 37 (b) 47 (c) 15 (d) 31
  32. 32.Which number is the odd one out: 64, 8, 38, 16? (a) 64 (b) 8 (c) 38 (d) 16
  33. 33.Which number is the odd one out: 28, 31, 73, 97? (a) 28 (b) 31 (c) 73 (d) 97
  34. 34.Which number is the odd one out: 80, 70, 77, 91? (a) 80 (b) 70 (c) 77 (d) 91
  35. 35.Which number is the odd one out: 60, 83, 17, 23? (a) 60 (b) 83 (c) 17 (d) 23
  36. 36.Which number is the odd one out: 67, 13, 41, 80? (a) 67 (b) 13 (c) 41 (d) 80
  37. 37.Which number is the odd one out: 59, 29, 56, 89? (a) 59 (b) 29 (c) 56 (d) 89
  38. 38.Which number is the odd one out: 24, 13, 52, 96? (a) 24 (b) 13 (c) 52 (d) 96
  39. 39.Which number is the odd one out: 61, 19, 29, 36? (a) 61 (b) 19 (c) 29 (d) 36
  40. 40.Which number is the odd one out: 64, 16, 35, 4? (a) 64 (b) 16 (c) 35 (d) 4

Answer key

  1. 42
  2. 84
  3. 90
  4. 51
  5. 70
  6. 18
  7. 14
  8. 40
  9. 15
  10. 48
  11. 3
  12. 63
  13. 25
  14. 63
  15. 84
  16. 92
  17. 15
  18. 34
  19. 46
  20. 84
  21. 95
  22. 18
  23. 25
  24. 68
  25. 26
  26. 36
  27. 58
  28. 90
  29. 95
  30. 74
  31. 15
  32. 38
  33. 28
  34. 80
  35. 60
  36. 80
  37. 56
  38. 13
  39. 36
  40. 35

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