Question

In how many different ways can the letters of the word 'PUNCTUAL' be arranged?

• A. 64
• B. 40320
• C. 690
• D. 20160
• E. None of these

Answer 1

The correct option is D 20160

The word PUNCTUAL consists of 8 letters in which the letter 'U' comes twice.
$\therefore$ Number of arrangements.
$=\frac{8!}{2!}=\frac{8\times 7\times 6\times 5\times 4\times 3\times 2\times 1}{1\times 2}=20160$