Hi.
Let me teach you a neat and sneeky trick to trick your friends!!!!!!!!!!
Here is the trick:
Pick a number, any number.
Trice it and add 21.
Divide the total by three.
Now,subtract your original number.
Are you thinking of the number
7?

Here is another trick if the previouse trick does not work:
Pick another number,any number.
Double it and add 12.
Divide the total by two.
Now,subtract your original number.
Are you thinking of the number
6?

Well if you could see the pattern, you can create out your own tricks.