In how many ways can Annie, Bushra, Camellia, Don, Eliza and Farzana be seated if Annie and Bushra cannot be seated next to each other?
সমাধান
সঠিক উত্তর: Option D
Suppose,
number of people =10
total expenditure= G
per person pay= g/10
if n number of people are added then per person pays=G/10+n
So, expenditure reduces= G/10-G/10+n=Gn/100+10n
