There are 25 towns in a certain country, and every pair of them is connected by a train route. How many train routes are there?

asked Jun 20, 2021 56.1k views

1 vote

4.5k points

Please log in or register to add a comment.

5 votes

Answer:

Explanation:

a pair=2

so 25/each pair of towns

25/2=12+1=13

Xmaestro answered Jun 27, 2021

4.5k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

4.7m questions

6.1m answers