The ballad of even and odd numbers

In this little trick, the number you choose can't exceed 8 digits
(or it won't be displayed on the screen).

It will be quite easy to find how to guess the number you thought of.

Il va nous rendre impair !

Think of a number
and
multiply it by 3.

If your result is an even number,
then divide it by 2,
          and click here

Otherwise add 1 and divide by 2
               then click here

Bonne balade ami Impair !

Once again multiply your result by 3.

As soon as you are ready click on

This time divide your result by 9.
Keep the integer quotient.

Give me your result

    As soon as you are ready click on





It's easy, here is the number
you thought of at the beginning

The ballad of even and odd numbers (1)

(1) Source : Sieur de Mériziac Problèmes plaisants et délectables : deviner le nombre que quelqu'un aura pensé 1874