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Specific month- so 1/11 months as february only has 29 days at most. Then 1/7. Then I would mult. the two together. However the answer is not there. Hence think a little more. How many 30th's can be a friday in any given year? Must rotate through days 1-7. If january 30 is friday then you will get one more friday on the 30th. So it should be 1/2 * 1/7 for 1/14?
Thats my thought process. Hope I dont see this on test day 1/11/07, a thursday incidentally.