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Question

If for a matrix, rank equals both the number of rows and number of columns, then the matrix is called

A
non-singular
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B
singular
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C
transpose
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D
minor
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Solution

The correct option is A non-singular
Given that both rows and columns are equal. So let us consider An×n

Also given that ρ(A) = number of rows of A = number of column of A.

So ρ(A)=n

|A|0
Hence A is non-singular

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