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

The dimensions of the matrix A are and the number of columns in the matrix A is 4.

The dimensions of the matrix B are and the number of the rows in the matrix B is 4.

The number of columns in the matrix A equals the number of rows in the matrix B.

So, matrix product AB is possible.

Its dimensions are .

The matrix product AB is defined and matrix AB dimensions are .

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