In a college, 45% of the students are enrolled in the Mathematics club (event M). The percentage of students enrolled in the Science club (event S) is unknown. A recent survey shows that 70% of the students are enrolled in at least one of the two clubs. Assume that M and S are independent.
a. (i) Determine P(S).
b. (ii) Find P(M∩S).
c. (iii) Out of 2000 students in the college, estimate how many are expected to be enrolled in both clubs, showing all calculations.