1. The problem statement, all variables and given/known data A library has been given 3 books. these books carry volume numbers X1, X2 and X3 where X1<X2<X3. But it is not known how many volumes there are altogether in the set. Suppose there are n volumes, numbered 1,2,3,...n in the set, and the 3 volumes in the library are regarded as a random sample from this total of n. Two estimators of n are proposed: Y=2(3X3-X1) Z=2X2-1 Consider the case where n is 3. show that the value of Y must be 4 and that the value of Z must be 3. 2. Relevant equations 3. The attempt at a solution I know i have to find X1 and X2 and X3 but i dont know how to start. Thank you!!