Question

A bag contains 9 red marbles, 6 white marbles, and 6 blue marbles. You draw 3 marbles out at random,

without replacement. Find the following probabilities and round to 4 decimal places.
a. The probability that all the marbles are red is
b. The probability that none of the marbles are red is
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Answer 1

Explanation:

a it be 3/21 to get red which is 0.143

b to get not red if u don't replace red would be 12/18 so it be 0.6666 but if u replace it then it would be 0.517