Question

If a matrix has $13$ elements, then the possible orders of the matrix are

• A. $1\times 13$ or $13\times 1$
• B. $1\times 26$ or $26\times 1$
• C. $2\times 13$ or $13\times 2$
• D. None of these

Answer 1

Answer: (A)

$1\times 13$ or $13\times 1$

If order of matrix $A=a\times b$
Then number of element in $A=ab$

Given $ab=13$

So, $a=1,b=13$

or $b=1,a=13$

So, $1\times 13$ or $13\times 1$ are possible order of A.