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

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The dimensions of the matrix E are \"\" and the number of columns in the matrix E is 6.

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The dimensions of the matrix F are \"\" and the number of the rows in the matrix F is 6.\"\"

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The number of columns in the matrix E equals the number of rows in the matrix F.

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So, matrix product EF is possible.

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Its dimensions are \"\".

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\"\"\"\"

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The matrix product EF is defined and matrix EF dimensions are \"\".