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(D) Matrix $X$ is of the order $2 	imes n$.Therefore,matrix $7X$ is also of the same order $2 	imes n$.Matrix $Z$ is of the order $2 	imes p$. Sinc

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$2 	imes n$

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(D) Matrix $X$ is of the order $2 	imes n$.Therefore,matrix $7X$ is also of the same order $2 	imes n$.Matrix $Z$ is of the order $2 	imes p$. Since it is given that $n=p,$ the order of matrix $Z$ is $2 	imes n$.Therefore,matrix $5Z$ is also of the order $2 	imes n$.Since both matrices $7X$ and $5Z$ have the same order $2 	imes n,$ their difference $7X - 5Z$ is well-defined.The order of the resulting matrix $7X - 5Z$ is $2 	imes n$.

Assume $X, Y, Z, W$ and $P$ are matrices of order $2 \times n, 3 \times k, 2 \times p, n \times 3$ and $p \times k$ respectively. If $n=p,$ then the order of the matrix $7X - 5Z$ is

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