Question

If Z= {x | x is an integer between 10 and -10}, write the complement of each of
the following sets.
a. A={-2, -4,-5, -8,-9} b. B = {1,4,9, -2, -6, -8,-9}​ explain me

Answer 1

Step-by-step explanation:

Z is universal set, here.

Z = {any integer b/w 10 & -10}

= {-9, -8, -7... 8, 9}

Completement of A(written as A') refers to the set of those elements which are in universal set but not in set A.

So,

A' = {x belongs to Z, but not to A}

= {-7,-6,-3,-1, 0,1,2,3,4,5,6,7,8,9}

Similarly,

B' = {-7,-5,-4,-3,-1,0,2,3,5,6,7,8}

Answer 2

Answer:

A'={-10,-7,-6,-3,-1,0,1,2,3,4,5,6,7,8,9,10}

B'={-10,-7,-5,-4,-3,-1,0,2,3,5,6,7,8,10}

Step-by-step explanation:

Z={-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10}

here Z is universal set.

complement is set of elements other than the set itself.

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