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Question
What is the result of multiplication by \[0\] for a matrix \[A\]?
Options
\[0\cdot A=-A\]
\[0\cdot A=1\cdot A\]
\[0\cdot A=O\]
\[0\cdot A=A\]
MCQ
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Solution
Multiplying every entry of \[A\] by \[0\] produces zero in every position. Hence, \[0\cdot A=O\].
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