a theatre has 11 rows of seats which have 1 to 10 series. unmatched numbers have 15 seats and 16 seats have matched number. how many seats are there in theatre?
Answers
Answered by
1
a theatre has 11 rows of seats which have 1 to 10 series. unmatched numbers have 15 seats and 16 seats have matched number. how many seats are there in theatre?
Step-by-step explanation:
sn = 15+(n-1)²
20th row n=20
∴The number of the seats in the theater will be:
15+(20-1)(2)=53 seats
Similar questions