$\"\"$

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The matrices are $\"\"$ and $\"\"$ .

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Multiplication of two matrices is possible if the number of columns in the first matrix is equal the number of rows in the second matrix.

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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Find $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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The matrices are $\"\"$ and $\"\"$ .