Test Your IQ With This One Problem!

This is one of the IQ Test for admission universtitas most famous in the world. Harvard University.
Reportedly, if you can answer that is knee uh ... your brain still works and rational. Although not also guarantee you pass Harvard

1 = 5
2 = 25
3 = 325
4 = 4325
5 = .....?

So, What is the answer to Number. 5?

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Posted in: Science