Question

Obtain the product of: $rn,-mn,mnp$

• A. $-m^3{n}^{3}p$
• B. $-m^2{n}^{2}p$
• C. $m^2{n}^{2}p$
• D. $-m^3{n}^{2}p$

Answer 1

The correct option is D $-m^3{n}^{2}p$

product of rn,mn,mnp
$rn\times -mn\times mnp=(1\times -1\times 1)\times (r\times m\times m\times n\times n\times n\times p)$
=$-1\times r\times m^2\times n^3\times p$
=$-r{m}^2{n}^{3}p$