Quite a lot/If not all the questions you see here will show up in the exam. Some answers in here are wrong but the questions are real. Always check the comments.
A voting comment increases the vote count for the chosen answer by one.
Upvoting a comment with a selected answer will also increase the vote count towards that answer by one.
So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.
nestorian
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