a
\([P] = [M{L^2}{T^{ - 3}}]\)

\({n_2} = {n_1}{\left[ {\frac{{{M_1}}}{{{M_2}}}} \right]^x}\,{\left[ {\frac{{{L_1}}}{{{L_2}}}} \right]^y}\,{\left[ {\frac{{{T_1}}}{{{T_2}}}} \right]^z}\)\( = 1 \times {10^6}\,{\left[ {\frac{{1\,kg}}{{10\,kg}}} \right]^1}\,{\left[ {\frac{{1m}}{{1\,dm}}} \right]^2}\,{\left[ {\frac{{1s}}{{1\min }}} \right]^{ - 3}}\) [\(\,1MW = {10^6}W\)]

\( = {10^6}\left[ {\frac{{1kg}}{{10kg}}} \right]\,{\left[ {\frac{{10\,dm}}{{1\,dm}}} \right]^2}\,{\left[ {\frac{{1sec}}{{60sec}}} \right]^{ - 3}}\)\( = 2.16 \times {10^{12}}\)unit