Match the following:
On which day of the week was birthday of Sachin ?
I. Sachin celebrated his birthday the very next day on which Arjun celebrated his birthday which was a day between Thursday and Sunday.
II. The sister of Sachin was born on the third day of the week starting from Monday and two day’s after Sachin was born.
A boy is excited about his approaching birthday. He collects 1 leaf on the first day of the month, 2 leaves on the second day and 3 leaves on the third day of the month and so on. On his birthday, he finds that he has collected 210 leaves in all. On which day of the month is his birthday?