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If A= (a(ij) ) is a scalar matrix of ord...

If `A= (a_(ij) )` is a scalar matrix of order `nxx n` such that `a_(ii)=k` for all `i,` then trace of `A` is equal to

A

`n k`

B

`n+k`

C

`(n)/(k)`

D

none of these

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A
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HIMALAYA PUBLICATION-MATRICES AND DETERMINANTS-QUESTION BANK
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