Question

If A = {1, 2, 4}, B = {2, 4, 5} C = {2, 5}, then $(A-B)\times (B-C)$ is

• A. {(1, 2), (1, 5), (2, 5)}
• B. {(1, 4)}
• C. (1, 4)
• D. None of these

Answer 1

The correct option is B

{(1, 4)}

{(1, 4)}

A = {1, 2, 4}, B = {2, 4, 5} and C = {2, 5}

(A - B) = {1}

(B - C) = {4}

So, $(A-B)\times (B-C)=\left\{\right(1,4\left)\right\}$