How do you guess what number someone is thinking between one and ten?

Answer 1

1. First, you ask what number the person is thinking of between one and ten.
2. Then, you tell them to double it.
3. Next, you tell them to add a number, specifically between one and ten and that can be split in half.
4. Now, tell them to divide the number that is now in their head by 2.
5. Now tell them to subtract their original number from the number they have now.

The trick is, when you tell them to do #3, that automatically tells you that their number is half of what you told them to add. Hope this helps!