Question

[{(2^-1)^-1}^-1]^-1 how to solve it?

Answer 1

I hope it may help you

Answer 2

$( { {a}^{x} })^{y} = {a}^{x \times y}$
So, sum becomes 2^{-1×-1×-1×-1}=2^{1}=2