One ticket is selected at random from 50 tickets numbered 00, 01, 02, ... , 49. Then the probability that the sum of the digits on the selected ticket is 8, given that the product of these digits is zero, equals (1) 1/14                                                (2) 1/7 (3) 5/14                                                (4) 1/50

Explanation

set A= `{ 8,17, 26, 35,44}`

set B= `{00,01,.......09,10,20,30,40}`

`P(A/B)= (P(A nn B))/(P(B))`

`= (1/50)/(14/50)`

`= 1/14`

option 1 is correct