Favourite Numbers - 7 wins again

A poll by author Alex Bellos has found, unsurprisingly, that seven is the world's favourite number!

He's released the results to coincide with his new book - Alex Through the Looking-Glass.

Numberphile had its own, less formal poll a while back.

It started with this video:



And then we harvested the stats to make this one:



Seven won that poll also.

Here are some previous appearances by Alex on Numberphile…





And his first book is Here's Looking at Euclid (aka Alex's Adventures in Numberland).