What combinations of 15 coins make a dollar?

To make a dollar using 15 coins, you can use various combinations of pennies (1 cent), nickels (5 cents), dimes (10 cents), and quarters (25 cents). For example, one possible combination is 10 dimes and 5 pennies, which totals 100 cents. Another combination could be 5 nickels and 10 pennies. The exact combinations can vary widely based on the selection of coin types.