Find the order and product of the matrices — task. Mathematics State Board, Class 10.

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Answer variants:

[\begin{array}{l} 77 & 42 \end{array}]

[\begin{array}{l} 77 & 154 \\ 21 & 42 \end{array}]

[\begin{array}{l} 77 \\ 42 \end{array}]

[\begin{array}{l} 77 & 21 \\ 154 & 42 \end{array}]

Multiply the matrices

[\begin{array}{l} 11 \\ 3 \end{array}]

and

[\begin{array}{l} 7 & 14 \end{array}]

then find product matrix and order of the product matrix.

The order of the product matrix is \(×\)

The product matrix

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1. Find the order and product of the matrices