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10 questions from this quiz
Yes, the inner numbers match (both 3)
5×45 \times 45×4
232323
AB≠BAAB \neq BAAB=BA generally
[1001]\begin{bmatrix} 1 & 0 \\ 0 & 1 \end{bmatrix}[1001]
AAA
A×A×AA \times A \times AA×A×A
Need matching dimensions to multiply by itself
No, inner numbers are 555 and 333
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