There are four types of common coins in US currency:
quarters (25 cents)
dimes (10 cents)
nickels (5 cents)
pennies (1 cent)
There are 6 ways to make change for 15 cents:
A dime and a nickel;
A dime and 5 pennies;
3 nickels;
2 nickels and 5 pennies;
A nickel and 10 pennies;
15 pennies.
How many ways are there to make change for a dollar
using these common coins? (1 dollar = 100 cents).