Dear Sir/Madam,
Following questions are troubling me. Kindly help me.
1) It is known that each of four people A,B,C,D tells the truth in a given instance with probability 1/3. Suppose that A makes a statement & then D says that C says that B says that A is telling the truth. What is the probability that A was telling the truth.
2) A fair coin is tossed until a head appear.Let X donate the total no. of tosses required. Find the probability density function , mean, variance and moment generality function.
3) If X has a

distribution of first kind with x ~

(l,m), then find:
(i) F (1/x)
(ii) Can E(1/x) = 1 ? (E= mean)
Thanks and Regards
Abhishek