Find the number of ways of arranging a girl and 20 boys at a circular table so that the girl always sits in a particular seat? Options
A) 3!	B) 8!	C) 11!	D) 12!	E) 20!
Ans.(E)   Sol. Total number of persons = 21 Girl can sit in a particular seat in one way. Now, remaining positions are defined relative to the girl. Hence, the remaining can sit in 20 places =&gt; 20! Ways ... The number of required arrangements = 20! x 1= 20! = 20! ways
<result>E</result>
Find the number of ways of arranging a girl and 20 boys at a circular table so that the girl always sits in a particular seat?