Weight More After Shitting

Do it this trick to your daddy or a friend:

Pedilen your friend to think any number and write it on the calculator without telling you that number and then scored in this order

you add 150 you add 50
Le reste 80
• Le reste 20

So I say to tell you the result and this result gave him (without telling your friend) subtract 100 mentally. Say aloud the final result and MAGIC! is the number you had chosen your partner.

for comment on the blog ...

• Why then do the trick all accounts the result is the number you thought your friend?
• What other accounts might undo the trick?
• Feel like inventing another mathematical trick?