Question

What condition should hold in order to multiply two matrices? A. The number of columns of...

What condition should hold in order to multiply two matrices?

  • A. The number of columns of the first matrix should be equal to the rows of the second matrix.

  • B. The number of rows of the first matrix should be equal to the columns of the second matrix.

  • C. None of the above.

  • D. Two matrices should have the same size.

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Answer #1

What condition should hold in order to multiply two matrices?

Option A is correct

In order to multiply two matrices the number of columns of the first matrix should be equal to the rows of the second matrix. The output matrix will have rows equal to the rows of first matrix and coloumns equal to the number of columns of second matrix.

Option B is incorrect because here the number of rows and coulumns are interchanged for matrix one and two respectively.

Option D is incorrect because two matrices having the same size can be multiplied but it is not a necessity.

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