peasy weasy - if the digit sof the two digit number are a and b, for the sake of argument, then that's a lots of ten a b lots of units. So the value of the number you get when you put a and b toegther is
10a + b
add the digits together and you get a + b
subtract that from the first one, and you get
10a + b - (a+b), or
10a - a + b - b, which equals 9a
So the answer will always be a multiple of 9 - 9, 18, 27 etc
Well I was referring to your picture age, but if you're going on real age, then with a maths A level, you shouldn't have any problem understand basic algebra like that.
Comments
and it was my star sign too.
10a + b
add the digits together and you get a + b
subtract that from the first one, and you get
10a + b - (a+b), or
10a - a + b - b, which equals 9a
So the answer will always be a multiple of 9 - 9, 18, 27 etc
Guess what - those each have the same symbol!
Bet it wasn't your star sign tho.
eh..?
It does seem to re-organise the symbols for the various numbers so that if you have more than one go, it won't always give the same answer
Have you not heard that line - "Deck the halls with boughs of holly"?
:-D
Knew there was an easy solution :-)
where's your santa hat?
:-D
Precisely Sezz!
s'maths, innit?
you'll learn it when you go to big school, Sezz )
:-D
:-D
me as well.. I was confuzzled with the maths and the name...
Annnnnnnywaaaaaaaaay...