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Akshaya posted an Question
June 12, 2021 • 17:10 pm 30 points
  • IIT JAM
  • Mathematics (MA)

As rank(ab)=min {rank(a),rank(b)}....either rank(a) oru rank(b) can be >4 no???

Let rank (AB)=4, then (a) rank(A) < 4 and rank (B)2 4 (b) rank(A) > 4 and rank(B)s 4 (c) rank(A) < 4 and rank(B)< 4 (d) rank(A) > 1 and rank(B)> 4

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