A cinema hall contains a certain number of people. If 22\(\frac{1}{2}\)% are children, 47\(\frac{1}{2}\)% are men and 84 are women, find the number of men in the hall.
If \(\frac{9^{2x-1}}{27^{x+1}} = 1\), find the value of x.
The sum of four numbers is 1214\(_5\). What is the average expressed in base five?
Find the number of ways of selecting 8 subjects from 12 subjects for an examination
