One ticket is selected at random from 100 tickets numbered 00, 01 ,02… , 98, 99. If x1 and x2 denotes the sum and product of the digits on the tickets, then P(x1=9/x2=0) is equal to

Question : One ticket is selected at random from 100 tickets numbered 00, 01 ,02… , 98, 99. If x_{1} and x_{2} denotes the sum and product of the digits on the tickets, then P(x_{1}=9/x_{2}=0) is equal to