If you had an infinite supply of water and a 5 quart and 3 quart pails, how would you measure exactly 4 quarts? and What is the least number of steps you need?

The following question given below have a problem and two statements numbered I and II giving certain 

information. You have to decide if the information given in the statements is sufficient for answering the

 problem. Indicate your answer as

How many doctors are practising in this town ? 

I. There is one doctor per seven hundred residents.

II. There are 16 wards with each ward having as many doctors as the number of wards.

A. if the data in statement I alone are sufficient to answer the question;

B. if the data in statement II alone are sufficient to answer the question;

C. if the data either in I or II alone are sufficient to answer the question;

D. if the data even in both the statements together are not sufficient to answer the question,; and

E. if the data in both the statements I and II are needed to answer the question.

At a family reunion there were the following people:

one grandfather
one grandmother
two fathers
two mothers
four children
three grandchildren
one brother
two sisters
two sons
two daughters
one father-in-law
one mother-in-law
and one daughter-in-law

But not as many people attended as it sounds. How many were there, and who were they?