Question

if A' union B = U then prove that A is a subset of B​

Answer 1

Consider two sets namely 'A' and 'B'. ... Now comparing set B with (A U B ), we find that all the elements of set B {5,6,7,8} are present in set (A U B). This makes set 'B' a subset of (A U B) (When all the elements of a set are present in another set, then this set is called a subset of the other set.)22-May-2017