List of top Quantitative Aptitude Questions on Exponents asked in AP ICET

If \( 8^{2x - 4} = 16^{x - 2} \), then \( x = \)
If \[ \left( \frac{2}{1} \right)^x \left( \frac{-1}{1} \right)^y = \left( \frac{4}{5} \right), \] then find the value of \( 2x - 3y \).