n people were sitting on a circular manner , if each of two present in the party except the pairs ...

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

Quiz

Answer/Solution

14

Steps/Work

each of 2 present in the party =>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:D

Physics Calculator / Auto Solver

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 mins and minutes was taken for singing song, find n

Calculated Answer

14

Step by Step Solution

In order to solve problem, you must evaluate n1 / n0.

n0 =2
n1 =28