If a * b = 2a - 3b + ab, then 3 * 5 + 5 * 3 is equal to

Correct Answer: (A) 22

Given the binary operation $a * b = 2a - 3b + ab$: evaluating $3 * 5 = 2(3) - 3(5) + 3(5) = 6 - 15 + 15 = 6$, and evaluating $5 * 3 = 2(5) - 3(3) + 5(3) = 10 - 9 + 15 = 16$. Summing both values gives $6 + 16 = 22$.