Find the number of distinguishable permutations of the given letters
"AAABBBCD".
There are: permutations.
If a permutation is chosen at random, what is the probability that it begins with at least 2 A's?
The probability is .
There are: permutations.
If a permutation is chosen at random, what is the probability that it begins with at least 2 A's?
The probability is .