DID YOU KNOW : How often the letter "e" is used?

e” is the most used letter in the english language. It appears ~12.7% of the time in the language.

The next popular letter is “t“, which appears ~ 9.1% of the time.

And “a” takes the third spot at 8.1%..

How did I find this out? From the free Crypto class being provided by Dan Boneh from the Stanford University.