0 votes
in Matrices by (49.6k points)
closed by

If A and B are two matrices of the order 3 × m and 3 × n, respectively, and m = n, then the order of matrix (5A – 2B) is

A. m × 3
B. 3 × 3
C. m × n
D. 3 × n

1 Answer

+1 vote
by (29.2k points)
selected by
Best answer

A. m × 3

As order of A is 3 × m and order of B is 3 × n

As m = n. So, order of A and B is same = 3 × m

∴ subtraction is possible.

And (5A – 3B) also has same order.

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.