Question

By what number should $3^{-4}$ be multiplied so that the product is $729$ ?

Answer 1

Let $3^{-4}$ be multiplied with x to get $729=3^6$

$\therefore 3^{-4}\times x=3^6$

$x=\frac{3^{6}x}{3-4}=3^{10}$

It should be multiplied with $3^{10}$