Find the number of ways of arranging a pen and 6 pencils at a circular table so that the pen always sits in a particular place? Select
A) 3!  B) 6!  C) 11!  D) 12!  E) 14!
Ans.(B)   Sol. Total number of persons = 7. The pen can sit in a particular place in one way. Now, remaining positions are defined relative to the pen. Hence, the remaining can sit in 6 places =&gt; 6! Ways ... The number of required arrangements = 6! x 1= 6! = 6! ways
<result>B</result>
Find the number of ways of arranging a pen and 6 pencils at a circular table so that the pen always sits in a particular place?