These questions are based on the following information.
Amar and Bhavan started running simultaneously from a point P in opposite directions along a circular track of radius 7 m. After every meeting, they exchange their speeds as well as directions. Bhavan started running with a speed thrice as that of Amar. They meet at point Q for the first time, point r for the second time and point S for the third time and so on.
At how many different points on the track do they meet?