293 ways
From my calculations, there's only 293 ways to make change for a dollar.
There are nearly 300 ways to make change for a $20 bill.
50
22 ways
There are 293 ways to make change for a dollar using the coins of a penny thru 1/2 dollar
6 ways
291 ways
there is none
There are forty ways to get change for a dollar using 5, 10, 25, and 50 cents.
263 ways
293