Suppose that a class contains 15 boys and 30 girls, and that 10 students are to be selected at random for a special assignment. Find the probability that exactly 3 boys will be selected.

Respuesta :

15C3 x 30C7 / 45C10 = 455 * 2035800 / 3190187286
926289000 / 3190187286 = 0.29035568
= about 29%