I'm afraid there's not enough information to answer this question.
What are the numbers on the twenty cards exactly?
Here's how you can do. Let n = the number of 8s in the 20 cards
The probability will just simply be n/20.
The probabilty of pulling a queen out of a stack of cards is four chances (since there are four queens, one of each suit) out of 52. Or 4/52, or .08, or 8%.
The probability of the card being BETWEEN 8 and K is 4/13.
The probability is 4/13.
Probability that it is one of these eight cards is 8/52. Hence the probability of not getting these eight cards is 44/52
2
The probability is 8/20.
8 out of 32
2 out of 13.
11.05%
There are four 9's and four jacks. If you can use all of them, you can use 8 out of 52 cards. The probability of drawing one of these cards is therefore 8/52 = 0.1538 or a 15.38 % chance.
8/52
ther are 4 8's.....4/54=1/13