Probability of A winning the match when individual probabilities of hitting the target given | Function to return the probability of A winning ; p and q store the values of fractions a / b and c / d ; To store the winning probability of A ; Driver code
< ? php function getProbability ( $ a , $ b , $ c , $ d ) { $ p = $ a / $ b ; $ q = $ c / $ d ; $ ans = $ p * ( 1 / ( 1 - ( 1 - $ q ) * ( 1 - $ p ) ) ) ; return round ( $ ans , 6 ) ; } $ a = 1 ; $ b = 2 ; $ c = 10 ; $ d = 11 ; echo getProbability ( $ a , $ b , $ c , $ d ) ; ? >