When is “World Earth Day” celebrated?

How many male members are there in the family? 

Which of the following is true about K?

If R has only one child and there are four male members in the family then how is the child of R related to Y?

How is M related to L?

How is U related to V?

Which of the following combinations of person is not a married couple?

How is M related to I?

Answer the questions based on the information given below:

N is married to O. P is the daughter of N, who is the mother-in-law of Q. R is the son of Q. O has only one child. How is O related to Q?

U is the daughter in law of whom among the following