What Ways Can You Make A Dollar Out Of 21 Coins?

2 Quarters
3 Dimes
1 Nickle
15 Pennies

3 dimes 13 nickles 5 pennies

7 dimes
4 nickels
10 pennies

Correction to a couple of the other answers:There are only 5 answers using US coins currently in circulation:

• H-Q-D-N-P
• 1-0-2-3-15
• 0-2-3-1-15
• 0-1-3-7-10
• 0-0-7-4-10
• 0-0-3-13-5

1 quarter
3 dimes
6 nickels
10 pennies