Question

Identify the correct statements:

(i) A matrix with 3 columns and 2 rows is of order $3\times 2$.
(ii) A matrix with 5 columns and 8 rows is of order $8\times 5$
(iii) If the order of a matrix is $4\times 3$, then it has 12 elements.
(iv) If the order of a matrix is $5\times 3$, then it has 10 elements.

• A. (i) and (ii)
• B. (ii) and (iii)
• C. (i) and (iii)
• D. (i) and (iv)

Answer 1

The correct option is B

(ii) and (iii)

Statements (ii) and (iii) are correct.
The order of a matrix is given by number of rows x number of columns
Hence statement (ii) is correct.
If the order of a matrix is m $\times$ n, then the number of elements is given by mn.
Hence statement (iii) is correct.