Jitterbug2361
Jitterbug2361 Jitterbug2361
  • 10-12-2020
  • Mathematics
contestada

There are 2O cities in a certain country. Every pair of cities is connected by an air route. How many air routes are there?

Respuesta :

stephenanton75 stephenanton75
  • 10-12-2020

Answer:

400

Step-by-step explanation:

Answer Link

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