Question

A box contains 5 black and 4 white balls. A ball is drawn at random and its colour is noted. The ball is then put back in the box along with two additional balls of its opposite colour. If a ball is drawn again from the box, then the probability? that the ball drawn now is black, is :

• A. $\frac{5}{11}$
• B. $\frac{53}{99}$
• C. $\frac{48}{99}$
• D. $\frac{7}{11}$

Answer 1

Answer: (C)

$\frac{48}{99}$

Answer 2

Answer (c) $\frac{48}{99}$