Answer:
933 seats
Explanation:
Given that :
4 different group of seats are in a movie theater :
The middle group ; 2 side groups and the back group
Number of seats in the movie theater :
THE MIDDLE GROUP:
21 Rows and 21 seats per row
Number of seats = 21 * 21 = 441 seats
THE SIDE GROUPS:
21 rows and 7 seats per row
Number of seats = 2(21 * 7) = 294 seats
BACK GROUP:
6 rows and 33 seats per row
Number of seats = 6 * 33 = 198 seats
Total number of seats :
441 + 294 + 198 = 933 seats