Question

A theater has 25 rows of chairs. The first row has 18 chairs, second has 22, the third has 26, and so on in total the theater seats ___ people

Answer 1

1650

Explanation:

You just need to add all of these numbers together 18 22 26 30 34 38 42 46 50 54 58 62 66 70 74 78 82 86 90 94 98 102 106 110 114.

You may ask how got these numbers. Well there is a pattern (x+4). X is the previous number.