Please solve each problem

A company plans to interview 13 recent graduates for possible employment. The company has three positions open. How many groups of three can the company select? DETAILS If P(A) = 0.44, P(A U B) = 0.84, and P(B) = 0.61, find P(A n B). O 0.2100 0.3500 0.3696 1.0500 DETAILS If A and B are independent events with P(A) = 0.2 and P(B) = 0.7, find P(A U B). O 0.14 O 0.7 0.76 O 0.9