Practicing Success
A box contains 3 white and 2 red balls. A balls is drawn and without replacing it, another ball is drawn. The probability that the second drawn ball is red, is |
8/25 2/5 3/5 21/25 |
2/5 |
Let the first ball be white and second be red. The probability of such a situation = $\frac{3}{5}.\frac{2}{4}=\frac{3}{10}$ Let the first ball be red and second also red. The probability of the occurrence = $\frac{2}{5}.\frac{1}{4}=\frac{1}{10}$ The required probability = $\frac{3}{10}+\frac{1}{10}=\frac{2}{5}$ Hence (B) is the correct answer. |