Here is a good one from Alex Reid!!!
Dimensions of a Matrix: "The dimensions of a matrix refer to the number of rows and number columns of a given matrix.
The rows of a matrix are the numbers going horizontally.
The columns of a matrix are the numbers going vertically.
To find the dimensions of a matrix you must multiply the (number of rows x the number of columns). The dimensions for the matrix above would be (2 rows x 3 columns). The dimension of the matrix is 2 by 3 or (2x3).
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