Retard:
I'll manually count out each and every possible way.
Cashier:
There's only one way which makes sense -- three quarters, a dime, and two pennies.
Lazy cashier:
Round up to 90 cents. Hell, round it to a dollar.
Cashier at a place with an automatic change-dispensing machine:
What's change?
Neurotypical:
Do your own homework, OP.
Autistic programmer:
I'll write a program to automatically evaluate the different possible combinations. It can then be used to determine the different combinations of change for other values as well.
Extremely autistic programmer:
I'll bash the other autistic programmer's code and needlessly ``optimize'' it or perhaps even write it in another language despite the fact that it's a relatively small program no matter what language you use.
Non-American:
Who cares, your currency is going to collapse anyway.
Faggot:
It costs more than a cent to produce a penny. We should round to the nearest nickel. And who uses half-dollars anyway, aside from those weird people who collect coins and stamps?
Neo-faggot:
Fiat currency is terrible. Let's all go back to investing in gold and silver.