A box consist of 10 white, 4 red and 2 black balls. If two balls are chosen from the box at random,

Question

A box consist of 10 white, 4 red and 2 black balls. If two balls are chosen from the box at random, then the probability of getting at least one white ball is

Professor PC Thomas Classes · Answer

$P(	ext{at least 1 white}) = 1 - P(	ext{no white}) = 1 - \frac{\binom{6}{2}}{\binom{16}{2}} = 1 - \frac{15}{120} = \frac{7}{8}$.