Matrix is of order

MATHEMATICS · Single correct · CBSE · Mathematics · Matrices · Matrices

Problem

Matrix

P

is of order

4 \times 6

. The product

PQR

exists and has order

4 \times 3

. Matrix

R

contains

30

elements. How many rows does

Q

have? (a) 4 (b) 10 (c) 6 (d) 3