Question

Total number of $4$ letter words that can be formed using the letters of the word ${}^{\prime }FLOWE{R}^{\prime }$, such that the word starts with $F$ and ends with $R$ is

• A. $20$
• B. $12$
• C. $18$
• D. $24$

Answer 1

The correct option is B $12$

First and last position is occupied by ${}^{\prime }{F}^{\prime }$ and ${}^{\prime }{R}^{\prime }$ respectively.
So, the number of arrangements $={}^4{P}_2=12$