0 votes 0 votes A cinema hall has a capacity of 100 seats–40 seats in the balcony and 60 seats on the ground floor. In how many ways can 100 viewers be accommodated, if 10 of them want to be in the balcony and 15 others refuse to be in the balcony? BOB asked Oct 25, 2018 recategorized Oct 25, 2018 by BOB BOB 1.4k views answer comment Share Follow See 1 comment See all 1 1 comment reply Shaik Masthan commented Oct 25, 2018 reply Follow Share @BOB How this question is tagged under Study Resources ? 0 votes 0 votes Please log in or register to add a comment.
Best answer 2 votes 2 votes The cinema hall has a capacity of 100 seats 40 seats in the balcony in which 10 of them want to be in the balcony it means 10 seats are reserved No of seats left in balcony : 30 seats 60 seats on the ground floor in which 15 others refuse to be in the balcony it means they want Ground floor No of seats left in ground floor 60 -15 = 45 seats 15 ground floor and 10 Balcony seats are reserved and only left 75 seats therefore Total no of arrangements = (75)! / (45)! * (30)! Magma answered Oct 25, 2018 edited Oct 25, 2018 by Magma Magma comment Share Follow See all 0 reply Please log in or register to add a comment.