\[\boxed{\text{672\ (672).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ \left( y^{2} \right)^{3} = y^{6}\]
\[2)\ \left( 2x^{3} \right)^{3} = 8x^{9}\]
\[3)\ \left( 3a^{2}b^{4} \right)^{3} = 27a^{6}b^{12}\]
\[4)\ \left( 0,1mn^{5} \right)^{3} = 0,001m^{3}n^{15}\]
\[5)\ \left( \frac{1}{6}b^{6}c^{7} \right)³ = \frac{1}{216}b^{18}c^{21}\]
\[6)\ \left( \frac{2}{7}p^{10}k^{15} \right)^{3} = \frac{8}{343}p^{30}k^{45}\]