Hi, the ISBN of your book includes number 6174. This was by chance or you selected it?

The Mysterious Number 6174; One of 30 Amazing Mathematical Topics in Daily Life ISBN-13: 978-4768761748, ISBN-10: 4768761747

## ISBN Book

Hi, the ISBN of your book includes number 6174. This was by chance or you selected it?

The Mysterious Number 6174; One of 30 Amazing Mathematical Topics in Daily Life

ISBN-13: 978-4768761748, ISBN-10: 4768761747