I'm assuming that this question is asking for what is 3^10 / 3^2 as 3^x.
3^10/3^2 = 3^(10-2) = 3^8
Oh so my speculation was right
Thanks!
n is 9
f(f(3)) = 9 - 1 = 8
f(f(8)) = 64 - 1 = 63
I'll do this the bash way
f(2010) = (2011)/(2009)
f(2011/2009) = (4020/2009)/(2/2009) = 4020/2009 * 2009/2 = 2010
You can also notice that f[(x+1)/(x-1)] = x
There are 18 total socks
The chance that he picks out a blue sock first is 6/18 = 1/3
the chance that the next sock he picks out is also blue is 5/17
1/3 * 5/17 = 5/51
So the answer is the second option
Hello
1/45 + 1/105 = 7/315 + 3/315 = 10/315 = 2/63
It will take 63/2 = 31.5 minutes to complete it
