Problema Solution
A bag contains five white marbles and five black marbles. What is the probability of drawing a white marble, not replacing it, and then drawing a black marble?
Answer provided by our tutors
P(draw white marble, and then draw black marble) = (5/(5 + 5))*(5/(5 + 5 - 1))
P(draw white marble, and then draw black marble) = (5/10)(5/9)
P(draw white marble, and then draw black marble) = 0.278