Dots In A Circle

Probability Level 3

There are 40 dots spaced evenly in a circle. If 4 distinct dots W,X,YW, X, Y and ZZ are picked randomly, what is the probability that WXWX intersects YZYZ?

If the probability can be expressed as ab \dfrac ab, where aa and bb are coprime positive integers, find a+ba+b.

×

Problem Loading...

Note Loading...

Set Loading...