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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?
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1 vote
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?

User Ljeabmreosn
by
8.2k points

1 Answer

5 votes

Answer:

13

Explanation:

a pair=2

so 25/each pair of towns

25/2=12+1=13

User Xmaestro
by
8.1k points
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