tricky math

Today I got a mail........ It’s really cool....

Hay    Try this it’s really different. This math’s test can predict your favorite personality. Try it without looking at the answers...
-pick 1fav no from 1-9
-then use that no *3 &
-then +3 then *3 again
-u will get a 2 digit no...
Add that 2 no & see your role model below..

1.) Obama
2.) Michel Jackson
3.) Bin laden
4.)...
5.)....
6.).....
7.)......
8.).......
9.) Your name.
 :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-) :-)

Solution :-)   :-) :-) :-)
It always gives answer as 9 since
Let we took some "x"
3(3x+3)
It is equal to 9(x+1)
All multiples of 9 has sum of the digits equal to 9.
Let check 18, 27, 36, 54, 63, 72, 81, 90, 99, 108…