A box contain 2 white and 3 blue identical balls. If two balls are picked at random, one after the other, without replacement, what is the probability of picking two balls of different colours?
\(\frac{5}{25}\)
\(\frac{7}{20}\)
\(\frac{3}{5}\)
\(\frac{2}{3}\)
\(\frac{5}{6}\)
Correct answer is C
No explanation has been provided for this answer.