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प्रश्न
Which pair of conditions defines a scalar matrix?
पर्याय
\[m=1\] and \[n=1\]
\[b_{ij}=1\] when \[i\ne j\] and \[b_{ij}=0\] when \[i=j\]
\[a_{ij}=0\] for every \[i\] and \[j\]
\[b_{ij}=0\] when \[i\ne j\] and \[b_{ij}=k\] when \[i=j\]
MCQ
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उत्तर
In a scalar matrix, every non-diagonal entry is zero. Each diagonal entry equals the same constant \[k\].
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