Formal proof

Let's say you have five candies and your friend has ten candies, and you want to prove to your friend that you have less candies than them. You have to use a formal proof to convince them.

First, you need to clearly define the problem. In this case, the problem is to prove that you have fewer candies than your friend.

Next, you need to state your assumptions. You assume that you have five candies and your friend has ten candies.

Then, you need to use logical steps to reach a conclusion. You can start by saying that five is less than ten. You can also draw a picture or use symbols to make your argument clear.

After that, you need to double-check your steps and make sure that they make sense. You can ask someone else to go through your proof and see if they agree with your conclusion.

Finally, you need to write a conclusion that summarizes your argument. You can say something like "therefore, it is proven that I have fewer candies than my friend."

By using a formal proof, you can convince your friend that you have fewer candies than them in a logical and clear way.