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How many combinations make 1.00 with 15 coins or less?
It depends on what the coinage is. Some countries have coins worth 0.25, others (UK, for example) do not.
What are coins used for money made out of?
it depends... some are made of copper, - penny. others are made out of gold or silver hense $$$ coins. Quarters are made out of nickel and copper. hope that helped you some :) this is my first time answering a question on here so... ya.
How do you make coins moldy?
You can put coins in an mouldy wrapping and some of the mould spores will rub off onto the coins. This will make the coins LOOK mouldy but, being metallic, they will not actually be mouldy.
Why are there holes in some coins?
To reduce their weight...
What is the difference between an uncirculated coin and a proof coin?
Uncirculated coins are ordinary coins that were struck for use in commerce but haven't been spent yet and have no wear. Sometimes you can be lucky and get a roll of uncirculated coins from a bank. Most Mints around the world also sell uncirculated coins to collectors; they're in sealed packages with some form of indication that the coins were never spent. Proof coins are specially struck for collectors. They're made separately from ordinary coins using highly-polished blanks and dies that produce extra-sharp, very detailed images. Many proof coins have mirrorlike surfaces but others receive special treatments that give a "frosted" appearance to the raised parts of the design or the background.
