Question
Evaluate the following:

$i ^{-888}$

Answer

We know that, $i^2=-1, i^3=-i, i^4=1$

$\mathrm{i}^{-888}=\left(\mathrm{i}^4\right)^{-222}=(1)^{-222}=\frac{1}{(1)^{222}}=1$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free