Answer
Given n = 10, x$_{1}$ = 5, x$_{2}$ = 2, x$_{3}$ = 2, x$_{4}$ = 1
P(1) = 5/16, P(2) = 4/16, P(3) = 1/16, P(4) = 6/16
P(5, 2, 2, 1) = 10!/5!2!2!1! x (5/16)$^5$ x (4/16)$^2$ x (1/16)$^2$ x (1/16)$^2$
= 8,859,317 / 4,294,967,296 = 0.002
Work Step by Step
as given in answer