# 100 Singapore Dollars

Singapore has dollar notes in denominations of $$1$$, $$2$$ and $$5$$. How many ways are there to form exactly $$100$$ using just multiples of these notes?

Details and assumptions

The question does NOT state that you must use every denomination. Using 20 $5 notes (and 0$1 and 0 $2 notes) to form exactly$100 is a valid way.

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