There was a confusing question in my reading test.
This is the sentence in the passage:
"All starfish have at least 5 arms, but some have more"
Is the following statement true?
"All starfish have 5 or more arms"
My class was confused by the word "or". Some people think the statement can be re-written as:
"All starfish have 5 arms or All starfish have more than 5 arms"
Which then makes the statement false.
So I want to ask: as a native speaker, what does this sentence really mean to you?