Finding Rank of a Matrix (CSIR NET Dec 2016 Math.Sci. Part B)

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This video discusses how to find the rank of a matrix in light of a CSIR NET December 2016 Mathematical Sciences Part B Question.

Question: Let J denote the matrix of order n x n with all entries 1 and let B be a (3n) x (3n) matrix given by B =
[ 0 0 J ]
[ 0 J 0 ]
[ J 0 0 ]
Then the rank of B is
1. 2n
2. 3n – 1
3. 2
4. 3

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When is your next video? :D Keep it up!

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