Question

If A={1,2,3} and B={2,6,7} then (A-B) UNION (B-A) is equal to ???????

Answer 1

Answer:

{1,3,6,7}

Step-by-step explanation:

A - B refers to the set of those objects which are in but A but not in B. Here,

A - B = {1,3} & similarly,

B - A = {6,7}

Hence,

(A - B)U(B - A) is {1,3} U {6,7}

is {1,3,6,7}