in a circular road there is a fixed point from which two buses move in clockwise and anticlockwise. in every after 20 mins there is a bus moving in either direction.a man came to the point randomly and picked up the bus that came first.he came ten times in ten days and out of ten he got anticlockwise bus in 9 times.explain it using probability.why the percentage is 90% why not 50%

Question

The only thing I can think of is it's the same as tossing a coin flipping heads 9 out of 10 times.

I'm assuming that in you're country, cars and buses drive on the LEFT side of the road. Therefore the bus driving on the inside, the counterclockwise-move bus, will be picked up more often.