How many ways are there to pick a collection of 13 coins from piles of pennies, nickels, dimes, quarters, and half-dollars? Base on the following condition: a) Assuming that each pile has at least 13 or more coins. b) Assuming that each pile has at least 13 or more coins and the pick must consist of at least one quarter coin or at least one dime. c) There are only 11 coins in each pile.