Three balls are drawn from a box containing 6 red marbles, 4 white marbles and 5 blue marbles. Find the probability that they are drawn in the order: red, white, and blue if each ball is drawn without replacement

Question

anonymous · Answer

BALLS?

anonymous · Answer

@wio You love these problems, don't ya :P

anonymous · Answer

First you find the total number of balls.

anonymous · Answer

Number of ways to draw red, white, and blue is $6\times 4\times 5$.
The number of ways to draw three balls is $^{6+4+5}\text P_3$.

anonymous · Answer

Probability is dividing the first by the second.