# 10.5.3. Matrix Multiplication

If is a matrix of order , and is a defined matrix of order , then is a matrix of order .

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If is a matrix of order , and is a matrix of order , find the order of the matrix , if possible.

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- C
- D

If is a matrix of order , and is a defined matrix of order , then is a matrix of order .

- A
- B
- C
- D

If is a matrix of order , and is a matrix of order , find the order of the matrix , if possible.

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- C
- D