Who introduce googolplex?

Answer 1

In 1938, Edward Kasner's nine-year-old nephew Milton Sirotta coined the term googol; Milton then proposed the further term googolplex to be "one, followed by writing zeroes until you get tired". Kasner decided to adopt a more formal definition "because different people get tired at different times and it would never do to have [boxing champion] Carnera be a better mathematician than Dr. Einstein, simply because he had more endurance and could write for longer.".[1]

Copied from: http://en.wikipedia.org/wiki/Googolplex