It is 50/100 = 1/2
The probability of selecting a red marble is 3/9
1 in 52
It is 0.2
5/12
probability of pulling out a purple marble = 20/85probability of NOT pulling out a purple marble = 1 - 20/85 = 65/85 = 13/17
3/16
20% (or 2 in 10 chance)
Three sixteenths, or 19%.
1 in 15 chances that the marble will be blue, because there are 15 marbles all together in a bag, and you are only picking one out of it.
2/9
11/16
B