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
function getProbability ( a , b , c , d ) { var p = a / b ; var q = c / d ; var ans = p * ( 1 / ( 1 - ( 1 - q ) * ( 1 - p ) ) ) ; return ans ; } var a = 1 , b = 2 , c = 10 , d = 11 ; document . write ( getProbability ( a , b , c , d ) . toFixed ( 5 ) ) ;