MCQ

The symmetric difference of *A* = {1, 2, 3} and *B* = {3, 4, 5} is

#### Options

(a) {1, 2}

(b) {1, 2, 4, 5}

(c) {4, 3}

(d) {2, 5, 1, 4, 3}

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#### Solution

(b) {1, 2, 4, 5}

Here,*A* = {1, 2, 3} and *B* = {3, 4, 5}

The symmetric difference of *A* and *B* is given by :-\[(A - B) \cup (B - A)\]

Now, we have:

\[(A - B) = {1, 2}\]

\[(B - A) = {4, 5}\]

\[(A - B) \cup (B - A)

= {1, 2, 4, 5}\]

Concept: Operations on Sets - Difference of Sets

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