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xokatexo

  • 3 years ago

A= {All even integers from 2 to 20, inclusive} B= {10, 12, 14, 16, 18} What is the complement of set B within the universe of set A?

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  1. jim_thompson5910
    • 3 years ago
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    Start with set A A= {All even integers from 2 to 20, inclusive} and expand it out to get A = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20} Now erase any number in the set above that you also find in set B.

  2. xokatexo
    • 3 years ago
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    no i get how to get the complement of B i just don't get how to do it within set A the complement of set B is {2, 4, 6, 8, 20}

  3. jim_thompson5910
    • 3 years ago
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    you start with A = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20} then you erase everything the elements in that set above that are also in B. So you erase 10, 12, 14, 16, 18 to get B' = {2, 4, 6, 8, 20}

  4. jim_thompson5910
    • 3 years ago
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    B' means the complement of B

  5. xokatexo
    • 3 years ago
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    I got that one but i dont understand this one: If the universal set is {pennies, nickels, dimes, quarters}, what is the complement of the set nickels?

  6. xokatexo
    • 3 years ago
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    OHHHH IGET ITT

  7. jim_thompson5910
    • 3 years ago
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    set nickels = {collection of all nickels} universal set is {pennies, nickels, dimes, quarters} So start with {pennies, nickels, dimes, quarters} and kick out all the nickels to find the complement of the set of nickels

  8. jim_thompson5910
    • 3 years ago
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    that's great

  9. xokatexo
    • 3 years ago
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    THANKS SO MUCHH!!!

  10. jim_thompson5910
    • 3 years ago
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    you're welcome

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