293 ways
Alot of ways
From my calculations, there's only 293 ways to make change for a dollar.
546
I believe that there are 4563 ways.
22 ways
over 9000
50
5
There are many. Various ways to make a dollar using coins. 100 pennies, 4 quarters, 2 50 cent coins, 1 50 cent coin and 2 quarters, 10 dimes, 20 nickels, and many variations. There are 293 ways to make a dollar but maybe there are more possible ways.
There are nearly 300 ways to make change for a $20 bill.
6 ways