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# A bag contains 8 red and 5 white balls.Three balls are drawn at random.Find the probability that all the three balls are red

$\begin{array}{1 1}(A)\;\large\frac{48}{143}\\(B)\;\large\frac{28}{143}\\(C)\;\large\frac{18}{143}\\(D)\;\large\frac{5}{143}\end{array}$

$\therefore$ The sample space is $S=13(8+5)$
$P=\large\frac{8}{13}\times \frac{7}{12}\times \frac{6}{11}$
$\;\;\;=\large\frac{28}{143}$