Study the given diagram carefully and answer the question. The number in different sections indicate the number of persons. What does region ‘13’ represent

In the diagram given below, circle H represents honest, circle I represents intelligent, circle O represents optimistic, and circle P represents punctual persons.

How many are punctual, optimistic and honest but not intelligent?

In the Venn diagram given below, circle ‘P’ represents educated, circle ‘Q’ represents rural, circle ‘R’ represents hard working, and circle ‘S’ represents tactful persons.

How many urban persons are there who are educated and tactful but not hard working? 

In the diagram given below,
Square represents married, Circle represents educated, Triangle represents men, and Rectangle represents dancers.

How many educated unmarried men are there who are not dancers?

Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of persons.
(Three sets are shown in the diagram representing Women, Politicians, and Poets.)

How many women poets are politicians?

Study the given diagram carefully and answer the question. The numbers in different sections indicate the number of persons.

How many 'Under 35 years' people are 'Salaried' but not 'Married'?

Study the given diagram carefully and answer the question. The number in different sections indicate the number of persons in an area who buy different magazines.

What is the number of persons who buy both Champak and Nandan but not Sarita ?