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'Train Routes' printed from https://nrich.maths.org/
Here we have a train line that has different routes from Appleby to
each of the main stations of Barkton, Cheston and Dorby, because
there are two crossing-over lines passing through Barkton and
Cheston.
The smaller stations at Yanbridge, Zogborough, Worsby, Xanly,
Underton and Vilham just have a single track running through them:
What are the different routes that
you can have to end at Cheston?
What are the different routes that
you can have to end at Dorby?
You might like to then invent your own routes that may go further
than this one and then answer similar questions that you can think
up.