This short riddle asks: what is the easiest way to double your money? The question sounds as if it should involve investing, saving, or finding a clever financial strategy.
The classic answer is: fold it in half.
If you physically fold a banknote in half, you have literally doubled the money over itself. Of course, the amount of money has not increased, but the word “double” is being used as a visual joke rather than a financial one.
That is what makes this riddle work. Most people immediately start thinking about ways to turn $10 into $20 or $100 into $200. The answer avoids arithmetic completely.
It is a simple piece of wordplay that rewards thinking literally about the physical money instead of focusing only on its value.
