Pentagonal numbers

Algebra Level 2

What is the product of the first 5 pentagonal numbers?


The answer is 46200.

Shreyas Garkhedkar by shreyas garkhedkar , 21, India

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3 solutions

Adeyeye Adetola
Apr 24, 2015

The first 5 pentagonal numbers are 1,5,12,22,35. hence their product is 1 5 12 22 35=46200

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David Holcer
Mar 20, 2015

http://en.wikipedia.org/wiki/Pentagonal_number

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Fox To-ong
Feb 13, 2015

The first pentagonal numbers are 1, 5, 12, 22 and 35

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