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Difficulty: Tricky Clare and Jeremy just finished a job overseas, on Dough Island. They received the following as payment, in the island’s currency: A $3 coin A $4 coin A $6 note An $8 note and A $9 note. Clare and Jeremy want to share the money so they both get the same number of […]

On Dr Vine’s desk there is some money. There are six pieces of Australian money. The money adds up to $63.

There’s a lot we don’t know about the tooth fairy. We don’t know what they look like, or how they get around, or even what they do with all the teeth they gather. But researchers around the world have been keeping tabs on the finances of this elusive tooth collector.

Australia has six coins that are commonly used – 5 cents, 10 cents, 20 cents, 50 cents, $1 and $2. How many different ways can you make exactly 50 cents in Australian coins?

You’re probably familiar with 20 cent and 50 cent coins. But different countries have different values for their coins. So what’s the best way to number coins?

Australian money is designed to be hard to copy. See if you can find all these features!

There are some surprising patterns that can be revealed in Australian coins if you take a closer look.