Assuming that you're only taking out one marble, then:
Your sample space --> 3 + 5 + 2 = 10
The probability of getting a blue marble on the first draw is 3/10 or 0.3
1 in 52
The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.
3/16
It is 0.2
None, if all the marbles that you have are yellow!
probability of pulling out a purple marble = 20/85probability of NOT pulling out a purple marble = 1 - 20/85 = 65/85 = 13/17
1 in 52
The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.
5/15 = 1/3 = 33 and 1/3 percent
3/16
5/12
1 in 7
It is 0.2
None, if all the marbles that you have are yellow!
2/9
the probability that a blue one is chosen is 5/10 which is equal to 1/2
11/16