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# Number Watch

1. When we use the phrase between 1 and 10, do we include the end-points 1 and 10? Is there any difference if we say from 1 to 10 instead?
2. It usually includes the end points, but is ambiguous. It's better to use notation{(1, 10), (1, 10], [1, 10), [1, 10]} or say "the open interval from 1 to 10" or "the closed interval from 1 to 10" etc.. If you want integers then say the "integers within the open interval from 1 to 10" etc. or use inequalities.

I notice that you're the same person from the Python thread. In Python, range(1, 10) gives an iterable that can be iterated to give [1, 2, 3, 4, 5, 6, 7, 8, 9].

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Updated: April 12, 2016
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