# Metric of cities

• April 3rd 2011, 03:57 PM
Connected
Metric of cities
Let $X$ be the set of cities, $a,b,c.$ Indicate which metric on $X$ must consider a traveller, if he moves in: a car, a plane, a train and a bike.

I don't get well the problem. How to proceed?
• April 3rd 2011, 05:15 PM
Drexel28
Quote:

Originally Posted by Connected
Let $X$ be the set of cities, $a,b,c.$ Indicate which metric on $X$ must consider a traveller, if he moves in: a car, a plane, a train and a bike.

I don't get well the problem. How to proceed?

This makes zero, absolutely no sense haha. Did you copy it wrong?
• April 3rd 2011, 05:23 PM
Connected
No, I copied it well.

Haha, for me doesn't make any sense too!