यदि कोई भी उद्योग (क्षेत्र) अपने स्वयं के उत्पादन का उपयोग आगत (input) के रूप में नहीं करता है, तो तकनीकी गुणांक आव्यूह (A matrix) के मुख्य विकर्ण तत्व होंगे:

Read the following statements about matrix operations: (i) Addition of two matrices is possible only when they have the same dimensions. (ii) Multiplication of two matrices AB is possible only when the column dimension of matrix A is equal to the row dimension of matrix B. (iii) If matrix A has dimensions m × n and matrix B has dimensions p × q with n = p, the order of matrix AB will be n × q. Which of the above statements are correct?

Given A = [2, 0; 3, 4] and B = [2, 1; 0, 5]. Which of the following is NOT correct?