Question

The number of ways in which four different letters can be selected from the word $DEGREE$

• A. ${}^6{C}_4$
• B. $1$
• C. $6!$
• D. $7!$

Answer 1

The correct option is B $1$

DEGREE

Number of letters $⟶6$

But ${}^{\prime }{E}^{\prime }$ Letterbhas been repeated thrice

$\Rightarrow$ Number of diffrent letter $=4$

Therefore the letters of the $4$ letterd word is one

$\Rightarrow$ Number of ways $=1$