We cannot multiply an n × m matrix by a 1 × m matrix.

Name: We cannot multiply an n × m matrix by a 1 × m matrix.
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Question

Quizplus · Accepted Answer

An n × m matrix has n rows and m columns, while a 1 × m matrix has 1 row and m columns. The number of columns in the first matrix must match the number of rows in the second matrix for multiplication to be possible. Since the number of rows in the second matrix is 1, it cannot be multiplied by an n × m matrix.

We Cannot Multiply an N × M Matrix by a 1