Question

In a theater there are 12 chairs in the first row, each row has 2 more chairs than the previous row, and there are 10 rows. How many chairs are there in the theater?.

Answer 1

Answer: 210

(I have Sensory Processing Disorder, so my explanation might look weird and long. Sorrrrrrry... :)

Explanation:

12 + 14 + 16 + 18 + 20 + 22 + 24 + 26 + 28 + 30 = 210