The Most Useful Letters
I was posed a fun question the other day: If you only have 10 letters on your keyboard, which ten letters allow you to type the most number of different words. As this was posted on Twitter, I wanted to give the answer, and include the generating code.
My solution was to remove take a dictionary, and remove the least necessary letter one by one, until I had ten left.
Here is my code golfed solution:
As for the letters, they are:
ACEILNORST which can make 8896 different words (according to the TWL dictionary).