Simplify : $3\times 2x\times 4$

Simplification of $5x\times 2x\times 3y$ is $k{x}^{2}y$. Find the value of $k$.

If $2x\times 3y\times 2xy=k{x}^m{y}^n$, then find the value of $\left(k+m+n\right)$.

Simplification of $xy\times xz\times x$ is $x^{k}yz$. Find the value of $k$.

Simplify : $2\times 2\times 3x\times 4$

Simplification of $4\times 2x\times 3x^{2}y$ is $k{x}^{3}y$. Find the value of $k$.

Simplification of $x\times y^2\times 4x$ is $k{x}^2{y}^2$. Find the value of $k$.

If $2a\times 3ab\times 2c=k{a}^m{b}^{n}c$, then find the value of $\left(k+m+n\right)$.

Simplification of $10x\times 2y\times 3x^{2}y$ is $k{x}^3{y}^2$. Find the value of $k$.