Kenneth Kong

600 because there are 30 rows, There are 12 seats to its left and 17 seats to its right. 12+17+1=30 It is the 3rd row from the front, and 18th row from the back, 3rd row overall, 20=1, 19=2, 18=3... 3 will then be 18! There will be 20 rows in total. Then,...