Can someone please help. This problem is confusing and I just can't figure it out.

Definition: Points that lie on the same line are called collinear.

Not sure if you need a minimum of three points in on a same line to be considered collinear.

Question

Five point A-E, NO definite lines drawn. E, D and C appear to be in line, A is below D, B is below C

Conside points A,B,C,D and E as shown

1. If two of these points are selected at random, what is the probability that they are collinear?

2. If three of these points are selected at random, what is the probability that they are collinear?

3. If four of these points are selected at random, what is the probability that they are collinear?