lets see how really smart you are
 

I was reading Elli's thread with her tricks , so here's mine , no tricks - just plain math .


1,5,6,7 . with these figures using only the four basic arithmetics : +,-,*,/ get me 21 .

You may not use any number more than once (or else use the number '1' 21 times .... duh) .

Just know that we brought this up to a math proffesor back then at university times , and he gave up after 3 hours

If anyone knows - dont spoil it , icq me the answer instead 63274674


Good Luck

i have gotten 19,20 and 22 so far, i wanna go to bed damnit

My brain hurts

It's 4:38am here, i'm drunk, and i got 22.

That's good enough under the circumstances...

lol, fuck that...

6 / (1 - (5 / 7)) = 21

1+5-6x7= 21
Mkay?

eeeeh! try again...

Pretty sure that's not how it works. :1orglaugh Nice try though.

I haven't tried & don't plan on it...in fact I don't even know what's going on here, but good luck fellas.


later
c-lo

Are we allowed to parenthesize? If so, this is pretty easy.

SpaceAce

very interesting, i will try.

parentheses hold no value in math. .. all they do is show you the order of in which you evaluate the numbers..

So i was wondering how many smart guys popped at 'who do you think is the smartest' thread , and none of them can sole a simple math quiz

You're the gays ambasador in gfy , show us that you guys are smart :winkwink:

Brilliant.. that is the correct answer

6 / (1 - (5 / 7)) = 21

True number is actually this



20.999999999999999999999999999685

:helpme