1. Make 21¢
with 3 coins. Dime, Dime, Penny
2. Make 21¢
with 4 coins. Dime, Nickel, Nickel, Penny
3. Make 21¢
with 5 coins. Nickel, Nickel, Nickel, Nickel, Penny
4. Make 51¢
with 3 coins. Quarter, Quarter, Penny
5. Make 51¢
with 6 coins. Dime, Dime, Dime, Dime, Dime, Dime, Penny
6. Make 51¢
with 5 coins. Quarter, Dime, Dime, Nickel, Penny