ISRO 2016 Probability [Mech]

Question

A and B are two candidates appearing for an interview by a company. The probability that A is selected is 0.5 and the probability that both A and B are selected is at most 0.3. The probability of B getting selected is

 

(a) 0.9

(b) 0.3

(c) 0.6

(d) 0.5

Answer 1

Answer is 0.6

As selection of A and B are independent events

P(A)*P(B)=0.3

0.5*P(B)=0.3

So P(B) is 0.6