You can't, for there are exactly 6 ways to have a dollar in change
with exactly 10 coins but every one of them requires at least one dime.
1. 10 dimes
2. 1 quarter, 6 dimes, 3 nickels
3. 2 quarters, 2 dimes and 6 nickels.
4. 3 quarters, 2 dimes and 5 pennies.
5. 1 half dollar, 1 dime and 8 nickels.
6. 1 half dollar, 1 quarter, 1 dime, 2 nickels, and 5 pennies.
Edwin