Question

Taking the set of natural number is universal set and a={x:x-8=3} then A'

Answer 1

Given that ,

The universal set is natural number and the set A is {x : x - 8 = 3}

The Set A can be written as ,

A = {x : x = 3 + 8} or {x : x = 11}

Now , the compliment of Set A i.e A' will be

A' = {x : x € N and x ≠ 11}

$\large \sf \underline{Extra \: Information :}$

• A U A' = Universal set
• (A')' = A
• (Φ)' = Universal Set
• (Universal set)' = Φ