1. (a) Assume the sample space C= {1,2,3,4,5,6} and the field B of C contains the sets {1} and {2,5}. Find all the sets in B.

(b) If P is a probability set function on B,P : B [0,1] such that P({1}) = 1/5 and P({2,5}) = 1/4 find P on every other set of B.