Wouldn't be better to edit the original question to get more accurate responses?
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You're correct, and you (or others) could compile the content of the questions into a single definitive question, time permitting. But whether you do that or not, find the earliest (or most appropriate / descriptive) and flag the others (as duplicates, so the 'original' is easily traceable) to be closed - a polite message informing the user of their misuse wouldn't go amiss (well, it might to the user, but it's nice to be nice.)
If the question is just a slightly changed version of an existing question, then it is a duplicate. In the specific case, the questions were the same; what changed is how the questions were phrased.
The OP should probably offer a bounty, if he wants to get an answer that better suits his needs. It still too early to offer a bounty, though, as he asked the first question 6 hours ago (and asked 2 duplicates in 5 hours).