Statement 1: If p is the probability of snow on any given day, the probability of it not snowing is 1-p. The probability of it snowing on at least one day during the week is 1-(the probability of it not snowing at all. The probability of it not snowing at all that week is (1-p)^7, so the probability of it snowing AT LEAST one day is 1-(1-p)^7, which we know is 0.918, so set 1-(1-p)^7=0.918 which you could clearly solve for p. SUFFICIENT.

Statement 2: The probability of snow falling every day in the first week is p^7. p^7=0.00022. Clearly this could be solved for p. SUFFICIENT.

Ans: D