Question

People in Spaceland live in 8 space stations, and travel between the stations in tubes.Every pair of stations is connected by two tubes. These are the only tubes inSpaceland. What is the total number of tubes?

Answer 1

Answer:

56

Step-by-step explanation:

Answer 2

Based on the way these stations are connected, we can infer that there are 56 tubes.

Number of tubes in Spaceland

Each pair of stations have 2 tubes. This means that every station is connected to each of the others.

We can therefore infer that each station has 7 tubes to the other stations.

The total number of tubes would therefore be:

= Number of stations x Number of tubes per station

= 8 x 7

= 56 tubes

In conclusion, there are 56 tubes.

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