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anonymous

  • one year ago

Can someone help me with a question for a fan and medal?

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  1. anonymous
    • one year ago
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    Find B union D. B: {-3, -1, 3, 4, 9, 11} D: {numbers divisible by 3 from 1 to 15}

  2. Kash_TheSmartGuy
    • one year ago
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    3 and 9.

  3. sh3lsh
    • one year ago
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    In principle, Union is like appending elements. However, note in sets, if the elements are the same, only one counts.

  4. sh3lsh
    • one year ago
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    Union, not intersection. @Kash_TheSmartGuy

  5. anonymous
    • one year ago
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    Okay Kash, but how did you get it?

  6. anonymous
    • one year ago
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    Wait so is Kash wrong sh3lsh?

  7. sh3lsh
    • one year ago
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    B: {-3, -1, 3, 4, 9, 11} D: {numbers divisible by 3 from 1 to 15} B: {-3, -1, 3, 4, 9, 11} D: {3, 6, 9, 12, 15} B U D: { -3, -1, 4, 11, 3, 6, 9, 12, 15} B (intersection) D {3, 9}

  8. Kash_TheSmartGuy
    • one year ago
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    So, I was correct!

  9. sh3lsh
    • one year ago
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    Does this make sense? Know that sets are unordered sequences with unique elements. @Kash_TheSmartGuy , you do understand that you gave the answer B (intersection) D, not B (union) D, right?

  10. anonymous
    • one year ago
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    Yeah, it does. I'll give Sh3lsh a fan since he explained it and Kash a medal. Thanks guys.

  11. sh3lsh
    • one year ago
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    :|

  12. Kash_TheSmartGuy
    • one year ago
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    Thank you!

  13. anonymous
    • one year ago
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    Well I can't give two medals, so thats the most I can give out. Sorry

  14. sh3lsh
    • one year ago
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    The response he gave was incorrect. Write that on a test, and you would receive no credit.

  15. anonymous
    • one year ago
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    But the question is multiple choice, and {3,9} was one of the answer choices. And you got the same answer too

  16. sh3lsh
    • one year ago
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    :| {3,9} is the INTERSECTION { -3, -1, 4, 11, 3, 6, 9, 12, 15} is the UNION

  17. anonymous
    • one year ago
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    {3, 9} {-3, -1, 3, 4, 9, 11} { } {-3, -1, 3, 4, 6, 9, 11, 12, 15} These are the answer choices. You both said {3, 9}.

  18. anonymous
    • one year ago
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    Find B union D. B: {-3, -1, 3, 4, 9, 11} D: {numbers divisible by 3 from 1 to 15} {3, 9} {-3, -1, 3, 4, 9, 11} { } {-3, -1, 3, 4, 6, 9, 11, 12, 15} This is the full question

  19. sh3lsh
    • one year ago
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    I think you should review set operations. One can take the Union of a set. One can take the Intersection of a set. (and more, but that's later) The previous commenter who didn't rectify his mistake found the INTERSECTION of the set. You asked for the UNION of the set. I explained how one could find the UNION and INTERSECTION. https://www.khanacademy.org/math/probability/independent-dependent-probability/basic_set_operations/v/intersection-and-union-of-sets

  20. anonymous
    • one year ago
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    I'm confused by what you're trying to say. Is the answer {3, 9} or not?

  21. sh3lsh
    • one year ago
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    No. But I cannot explain any longer.

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