Let be a matrix

MATHEMATICS · Subjective · CBSE · Mathematics · Matrices · Matrices

Problem

Let

A

be a

3\times k

matrix,

B

be a

k\times2

matrix and

C

be a

2\times5

matrix. The product

ABC

is defined. (i) Determine the value of

k

. (ii) Find the number of elements in the matrix

ABC