Question

(2^3/5*5^2/3)^15/10^9

Answer 1

$frac{(2^{ frac{3}{5}} *5^{ frac{2}{3} })^{15}}{10^9} =frac{2^{ frac{3*15}{5}} *5^{ frac{2*15}{3} }}{10^9} == frac{2^9*5^{10}}{5^9*2^9}=5$