<p>On a square game board that is divided into n rows of n squares each, K of these squares lie along the boundary of the gameboard. Which of the following is a possible value for k ?</p>
<p>The Answer is 52, It took me 3 min.</p>
<p>I want to save as much time possible in the coming Sat test</p>
<p>It has to satisfy this :</p>
<p>4x - 4 = ?</p>
<p>Where x is an integer.</p>
<p>It has to be a multiple of 4 because each side has the same number of boundary squares.</p>
<p>I’m assuming that 52 was the only choice that was a multiple of 4?</p>
<p>^^Right.</p>
<p>Because you have a board that has dimensions n x n. So the outside squares are going to be n+n+(n-2)+(n-2) = 4n-4</p>
<p>Just in case you wanted to see where gensis got his answer from.</p>
<p>That’s right 52 was the only choice that was a multiple of 4, thx guys for your help</p>