Put on your  math thinking caps.

The Icon invited Chris Leuthold, adjunct math instructor at Bluffton University, to provide The Icon with some math puzzles. Here's quiz number 2. (The answer to quiz number 1 is at the bottom of this story.)

We want to assist our viewers with ways to survive the long, dark winter nights. Chris rates  the level of difficulty  in his quizzes from 1 to 4, with 4 being the toughest.

He rates this week's quiz as a 2. Here goes:

The number 2015 is divisible by 65. What is the next year that is divisible by 65? 

(answer next next week)

Here's the first quiz with the answer below:

In a standard tic-tac-toe grid (see image with this story), what is the most number of boxes that can contain an "X" without showing three in a row in any direction.

ANSWER: 6