n people were sitting on a circular manner , if each of two present in the party except the pairs were adjacent sang a song , if a song lasted for 2 mins and 28 minutes was taken for singing song , find n	Select:
A) 11  B) 12  C) 13  D) 14  E) 15
each of 2 present in the party =&gt;no. of pairs possible=nc2   possible adjacent pairs=n   total required combinations=nc2-n   time taken by each combination to sing a song=2 min   total time taken=2(nc2-n)=28   on solving the above equation, we get n=14   ANSWER:14
<result>D</result>
n people were sitting on a circular manner , if each of two present in the party except the pairs were adjacent sang a song , if a song lasted for 2 mins and 28 minutes was taken for singing song , find n