A 10 by 10 grid is using 100 points, as shown. Point P is given. one of th other 99 points is randomly chosen to be Q. What is the probability that the line segment PQ is the vertical or horizontal

A 10 by 10 grid is using 100 points, as shown. Point P is given. one of th other 99 points is randomly chosen to be Q. What is the probability that the line segment PQ is the vertical or horizontal.