5 lb. Book of GRE.
page 552, problem #11
We have 1/1 /1/(5^-2)
I definitely agree that 1/(5^-2) equals 5^2.
But then we have 1/1 /5^2, you guys can't just change the order in which this fraction was written. Even if we stupidly divide on calculator 1/1/5^2, we got 0.04, which is equivalent of 1/(5^2)! That's the true!
So, we can solve this problem in this way:
(1/1)*(1/5^2) because we have to flip the second fraction which was 5^2! So, the right answer is 1/25!