Question

In a swimming race 3 swimmers compete . The probability of A and B wining is same and twice that of C.What is the probability that B or C wins. Assuming no two finish the race at the same time.

• A. 2/10
• B. 1/5
• C. 3/5
• D. 8/10

Answer 1

The correct option is C 3/5

P(C)=p

P(A)=2p

P(B)=2p

P(A)+P(B)+P(C)=1

p=$\frac{1}{5}$

P(BUC)= P(B)+P(C)= $\frac{1}{5}+\frac{2}{5}=\frac{3}{5}$