234 - 3 = 231
231 : 3 = 77
77 + 1 =78
78 + 1 = 79
------------------------
77 78 79
77+78+79= 234
29 is a prime number so it's A
Well three seats in the right with 24 seats means there is 8 rows. I assume the same for the left. So 2x8=16. Sixteen Seats on the left. This is my theory. Though options would be nice.
Answer:
6 if I am correct I hope this helps