10 In the 6 x 4 grid shown, 12 of the 24 squares are to be shaded so that there are two shaded squares in each row and three shaded squares in each column. Let N be the number of shadings with this property.
10 Sa 6 x 4 grid ipinapakita, 12 ng 24 kahon ay dapat shaded kaya na mayroong dalawang shaded kahon sa bawat hanay at tatlong shaded kahon sa bawat haligi. Hayaan N ay ang bilang ng mga shadings na ito ari-arian.