Question
In the land of Pi, there are six cities arranged in a circle. Each city is connected to every other city by a straight road. How many roads are there?
Answers
R_scott
each of the six cities is connected to five others
but the road from A to B , is the same as the road from B to A
but the road from A to B , is the same as the road from B to A
Reiny
The question basically becomes: How many diagonals does a hexagon have
which would be C(6,2) or 15
which would be C(6,2) or 15
R_scott
diagonals vs sides?
Reiny
thanks R_scott for picking up on that.
Forgot to subtract the 6 sides from that total
Forgot to subtract the 6 sides from that total