There are two bags. One contains 4 white & 5 Black balls, another contains 4 white & 3 black balls. If one ball is drawn from the first bag and kept in another bag unseen then the probability of choosing a black ball from the second bag is:
1
\(\frac{4}{9}\)
2
\(\frac{25}{318}\)
3
\(\frac{3}{4}\)
4
\(\frac{15}{324}\)