What does this definition of contiguous subsequences mean?

Question

I don't understand the following definition of a contiguous subsequence:

A contiguous subsequence of a list S is a subsequence made up of consecutive elements of S.

If S is {5, 15, -30, 10, -5, 40, 10}
then 15, -30, 10 is a contiguous subsequence.

What makes 15, -30, 10 a contiguous subsequence?

Answer 1

A contiguous subsequence of a list S is a subsequence made up of consecutive elements of S.

Answer 2

Uhm, maybe because they are consecutive as per your definition?

Answer 3

The form a subset that are next to each other within the set.

con·tig·u·ous/kənˈtigyo͞oəs/Adjective
1. Sharing a common border; touching.
2. Next or together in sequence. 

Answer 4

This is not directly programming related but 15, 30, -15 is a contiguous subsequence because you can find them in the same order inside the given list (without any holes between the elements of course).

Answer 5

They are elements of your original array and they are all continous.

Answer 6

Contiguous elements are consecutive elements.