Is it always the case that for an integer that is not a perfect square that that the sum of its factors is even? When I test 8, the sum of its factors is 15, which is odd. But when I have been testing other numbers the sum is always is even. Thanks.

The coordinates of points A and C are (0, -3) and (3, 3), respectively. If point B lies on line AC between points A and C, and if AB = 2BC, which of the following represents the coordinates of point B? This comes from the geometry math bin questions. I don't understand the explanation as it relates ...

I have a question from the sentence correction bin of questions on the MGMAT website. The sentence is: Though viewed from a distance, Saturn's main rings may appear to be smooth and continuous, they are in fact composed of thousands of separate icy ringlets when viewed up close. All of the answer ch...