Blood Relations Questions

Ms. Chandra said that Lakshmi's husband is the only son of my grandfather. How is Ms. Chandra related to Lakshmi?

Pointing to K, M said that she was the daughter of the only son of his grandfather. How M is related to K?

Mr.X is the only son of Ms. Y's grandfather. If Mr. X has no brothers or sisters and his father is Ms. Y's grandfather, then Mr. X is Ms. Y's ___.

If Y is the brother of X, Y is Z's son then Z's father is X's ___.

Raman told Ananth " Day before yesterday I taught the only brother of the daughter of my paternal grandmother". Whom did Raman teach?

Pointing to a woman, I said that her brother's only son is the brother of my wife. How is the woman related to me?