Question

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?

Answer 1

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.

Answer 2

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}

Answer 3

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}

Answer 4

B' means the complement of B

Answer 5

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?

Answer 6

OHHHH IGET ITT

Answer 7

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

Answer 8

that's great

Answer 9

THANKS SO MUCHH!!!

Answer 10

you're welcome