Question

A square matrix is having p number of rows. What is ‘j’ if $a_{ij}$ is situated in the last row and second last column

• A. p + 2
• B. p - 1
• C. 2p
• D. 2

Answer 1

The correct option is B

p - 1

You know in a square matrix, the number of columns will be same as that of number of rows. Here the order is p $\times$ p. Given ‘j’ represents second last column number and the total number of columns is p. Therefore j = p-1.