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# D1 question on route inspection unsure watch

1. Attachment 615614615616Hi for this question, I am uncertain about it as I don't get the meaning of repeated route. So from my working, it shows that AF and ED are to be repeated once again. However, in the route that I have constructed, other vertices such as G (underlined red) are also repeated... My route is also different from the answer, so is it still OK?

Thanks very much
Attached Images

2. Also the question does not state the unit is metre, so why is the mark scheme stating that the unit is m?
Thanks
3. (Original post by coconut64)
Attachment 615614615616Hi for this question, I am uncertain about it as I don't get the meaning of repeated route. So from my working, it shows that AF and ED are to be repeated once again. However, in the route that I have constructed, other vertices such as G (underlined red) are also repeated... My route is also different from the answer, so is it still OK?

Thanks very much
Looks fine, repeated arc just means that those arcs need to appear twice in the route, so AF and ED has to appear twice. it can appear either order AF or FA and ED or DE, it doesn't matter.

I have no idea why the unit is m.
4. (Original post by NotNotBatman)
Looks fine, repeated arc just means that those arcs need to appear twice in the route, so AF and ED has to appear twice. it can appear either order AF or FA and ED or DE, it doesn't matter.

I have no idea why the unit is m.
Thanks. But I have G repeating twice in my route though...
5. (Original post by coconut64)
Thanks. But I have G repeating twice in my route though...
That doesn't matter, you can visit nodes more than once; it's the arcs you're interested in. Look out for pairs of letters.
6. (Original post by NotNotBatman)
That doesn't matter, you can visit nodes more than once; it's the arcs you're interested in. Look out for pairs of letters.
Thanks for bearing with me, that's very kind of you. So in my working, although A has appeared 3 times, it has only been repeated 2 twice right? Since AF/ FA only appeared twice.

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