Question
If n= p, then the order of the matrix 7X$-$5Z is
- (a) p x 2
- (b) 2 x n
- (c) n x 3
- (d) p x n
Matrices — Class 12 Maths Solution
Step-by-step Solution
.:
Option b is correct
$7X - 5Z = 7{X_{2 \times n}} - 5{Z_{2 \times p}}$
We can add two matrices if their order is same.
$n = p$
$\therefore$ Order of 7X$-$5Z is 2 × n.
NCERT & Exemplar solution for CBSE Class 12 Mathematics, Matrices. Curated by Sachin Sharma. Free for all students.