Category: Life >> Food/Cooking

Question description:

There are 10 candies, and every 2 candy wrappers can be exchanged for one candy. The final question How many candies can you eat? Why is the answer that you can eat 20 candies in the end?

Analysis:

This question is actually related to the principle that 20 yuan can drink 40 bottles of soda. Same. Eat 10 candies first, then exchange 10 candy wrappers for 5 candies. After eating, exchange 4 (5=4+1) candy wrappers for 2 candies. After eating, exchange 2 candy wrappers for 1 candy. After eating, replace the original remaining candy wrapper with another candy. Now you have eaten 19 candy wrappers (15+2+1+1). Next, there will be only one candy left. If you have a candy wrapper, exchange the candy wrapper for 1 candy (you owe the merchant a candy wrapper). After eating the candy, just return the candy wrapper to the merchant. Although in reality, I don’t know if the merchant will agree to you eating the candy first and then returning the candy wrapper, but in theory it should still work. At least in the end, you will get 20 pills without spending any extra money.