Question

The total number of matrices that can be formed using 5 different letters such that no letter is repeated in any matrix is

• A. $\begin{matrix} 5 \end{matrix}$
• B. 2 × 5⁵
• C. $2\begin{matrix} 5 \end{matrix}$
• D. None

Answer 1

Answer: (C)

$2\begin{matrix} 5 \end{matrix}$

Answer 2

Matrix having five elements is 5 × 1 or 1 × 5

\ Total no. of such matrices = 2 × $\begin{matrix} 5 \end{matrix}$