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In case of matrix of order n × n which of the following is true (I is identity matrix of order n)
  • a)
    AB  = BA
  • b)
    A – B = B – A    
  • c)
    A(BC) = (AB)C
  • d)
    AI = IA = I
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In case of matrix of order n × n which of the following is true ...
Matrix multiplication is always associative => (AB)C = A(BC)
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In case of matrix of order n × n which of the following is true (I is identity matrix of ordern)a)AB = BAb)A – B = B – A c)A(BC) = (AB)Cd)AI = IA = ICorrect answer is option 'C'. Can you explain this answer?
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