On eаch оf three cоnsecutive dаys the Nаtiоnal Weather Service announces that there is a 50-50 chance of rain in Cincinnati area. Assuming that the National Weather Service is correct. (1) What is the probability that it rains on exactly one of the three days? [a1] (2) What is the probability that it rains on at least one of the three days? [a2] (3) What is the probability that it rains on at least two of the three days? [a3] Please fill in each blank with a numerical value in the form of m/n, where m and n are non-negative integers.