3 out of 10
hm, if order does not matter
then it is 3/10 that one of the 3 is chosen
assuming that one was chosen, we now have a probablity of 2/9
then the last is 1/8
so the ending probablity will be 3/10 times 2/9 times 1/8 or 6/720 or 1/120
the probablity will be 1/120
if the order does matter then it is
1/10 times 1/9 times 1/8 or 1/720 because there is 1 choice for each