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Question

If [1 2 3 ]A = [4 5], the order of matrix A is :

  1. 3 × 2    
  2. 3 × 1    
  3. 2 × 3    
  4. 2 × 1    

The correct answer is: 3 × 2


    Order of [1 2 3] is 1 × 3
    Order of [4 5] is 1 × 2
    therefore order of A is 3 × 2

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