Identify the order of the matrix \(\begin{pmatrix} 5&-1&7\\9&-4&8 \end{pmatrix}\).

(A)  \(2\times 3\)

(B)  \(3 \times 2\)

(C)  \(2\times2\)

(D)  \(3\times3\)

Identify the order of the matrix \(\begin{pmatrix}6&1 \end{pmatrix}\).

(A)  \(1\times1\)

(B)  \(2\times1\)

(C)  \(2\times2\)

(D)  \(1\times2\)

Identify the order of the matrix \(\begin{pmatrix}\phantom{-}1&\phantom{-}2\\-6&\phantom{-}4\\\phantom{-}3&-10\end{pmatrix}\).

(A)  \(3\times3\)

(B)  \(2\times3\)

(C)  \(2\times2\)

(D)  \(3\times2\)

For the matrix

\(\begin{pmatrix}​​\phantom{-}7&\phantom{-}9&-4\\\phantom{-}8&\phantom{-}5&\phantom{-}0\\-4&\phantom{-}5&\phantom{-}6\end{pmatrix}\),

state the element in \(X_{23}\).

For the matrix

\(\begin{pmatrix} \phantom{-}7&\phantom{-}9\\ -1&\phantom{-}4\\ \phantom{-}8 &-8 \end{pmatrix}\),

state the elements in \(X_{11}\), \(X_{22}\) and \(X_{31}\).

(A)  \(X_{11}=7,\quad X_{22}=4,\quad X_{31}=8\)

(B)  \(X_{11}=9,\quad X_{22}=4,\quad X_{31}=-8\)

(C)  \(X_{11}=7,\quad X_{22}=-1,\quad X_{31}=8\)

(D)  \(X_{11}=7,\quad X_{22}=4,\quad X_{31}=-8\)