Question 1067136
4 ways to choose the first*4 ways to choose the second*4 ways to choose the third or 64 different combinations.
The smallest would be 4 pennies or $0.04
The largest would be 4 dimes or $0.40.
Many of these would give the same amount.  There are 37 different possible amounts.
What may be excluded?

4 pennies--4 cents
3 pennies and 1 nickel--8 cents
2 pennies and 2 nickels--12 cents
1 dime and 3 pennies--13 cents
3 nickels 1 penny=16 cents
1 dime 1 nickel 2 pennies=17 cents
4 nickels=20 cents
1 dime 2 nickels 1 penny=21 cents
2 dimes, 2 pennies=22 cents
1 dime, 3 nickels=25 cents
2 dimes, 1 nickel, 1 penny=26 cents
2 dimes, 2 nickels=30 cents
3 dimes, 1 penny=31 cents
3 dimes, 1 nickel=35 cents
4 dimes=40 cents
15 different amounts.