Question

The number of $5$ letter arrangement that can be made from the letters of the word CONSIDER that are to begin with C and end with R is

• A. $720$
• B. $360$
• C. $120$
• D. $40320$

Answer 1

The correct option is C $120$

$\frac{C}{}\frac{}{6}\frac{}{5}\frac{}{4}\frac{R}{}$ Total letters count $=8$

Total letter remains after $C$ and $R$ being placed.

total no. of ways $=6\times 5\times 4$

$=120$.