Assertion: matrix's number | /r/HasProperty | the same
Facets:
Source sentences:
text: We learn in the Multiplying Matrices section that we can multiply matrices with dimensions (m × n) and (n × p) (say), because the inner 2 numbers are the same (both n).
text: While the outer numbers are the same, the inner ones are not, so you can't multiply them.
text: To multiply AB, we first have to make sure that the number of columns in A is the same as the number of rows in B. Matrix A has 2 columns and matrix B has 2 rows so we will be able to perform this operation.