Answer the following questions related to basic probability:
a. (i) Define a sure (certain) event and an impossible event.
b. (ii) State the range within which the probability of any event must lie.
c. (iii) If an event A has probability P(A)=1, what kind of event is A? Give one example from daily life to support your answer.
d. (iv) If P(B)=0, classify event B and cite one real-life illustration of such an event.