GO Classes Test Series 2024 | Mock GATE | Test 11 | Question: 37

Answer 1

We just need to line up the powers of $b$ and $c$ in reverse order, using that $c^{-k}=c^{3-k}$ and $b^{-\ell}=b^{5-\ell}$.
$$
b^2 c b^4 c^2 \text { gives us } c b c^2 b^3 \text {. }
$$