#### AreYouAlright?

##### Actuarial Co-op 2006

- Joined
- Sep 16, 2004

- Messages
- 133

- Gender
- Male

- HSC
- 2005

Twelve points are arranged in order around a circle

a) How many triangles can be drawn with these points as verticies? ( I can do this )

b) How many pairs of such triangles can be drawn if the vertices of the two triangles are distinct? (I can do this too )

c) In how many such pairs will the triangles i) Not overlap ii) Overlap????

Help please