Question

the probability of A winning a race is 1/5 and of B winning the same race is 1/4. what is tha probability of neither of them winning ?​

Answer 1

P(A) = 1/5

P(B) = 1/4

Probability of neither of them winning = 1 - (1/5+1/4)

                                                               = 1 - 9/20 = 11/20