Question 419957
): There are 5 brown, 6 red and 4 white marbles in a hat. You pick 4 marbles from the hat. Marbles are not returned after they have been drawn. What is the probability of picking 4 white marbles in a row?
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1st: 4/15
2nd: 3/14
3rd: 2/13
4th: 1/12
P(4 in a row) = product of those = (1*2*3*4)/(12*13*14*15) = 0.0007326...
Cheers,
Stan H.