Author: Chuckles

Mysterious tech-minded ghost

Early 1900s construction boom

When there are no accountants involved … The Singer Building (1908-1967). A painting in the lobby of the Liberty Tower, today, showing the Singer Building as it might have appeared in its early days (including zeppelins). (Courtesy of Theo Mackey…

Coins

Assuming there are an infinite supply of coins, what is the fewest number of coins would be required in order to make sure each and every coin touched exactly three other coins?