Q: This is one of the "lost" puzzles of Sam Loyd, the great American puzzlemaker from the 19th and early 20th centuries. It's from an old magazine with a Sam Loyd puzzle column. The object is to arrange three 9s to make 20. There is no trick involved. Simply arrange three 9s, using any standard arithmetic signs and symbols, to total 20. How can it be done?The whole point is there are no tricks involved. So you don't need to flip numbers upside down or involve higher order math like square roots or factorials... at least my solution doesn't need those.
Edit: My hint was point as in decimal point.
A: (9 + 9)/.9 = 20