Question of the week – Solution

Click ‘more…’ to read the solution.

The correct answer is 1.

Solution:

Go clockwise around the star. Add the number on the outermost points of the star to the following number on a inner point of the star to get the number on the next outermost point.

2 + 3 = 5

5 + 1 = 6

6 + 7 = 13

13 + 2 = 15

15 + (-13) = 2