Exams

Two pipes A and B can fill an empty cistern in 18 and 27 hours, respectively. Pipe C can drain the entire cistern in 45 hours when no other pipe is in operation. Initially, when the cistern was empty Pipe A and Pipe C were turned on. After a few Pipe A was turned off and Pipe B was turned on instantly. In all, it took 55 hours to fill the cistern. For how many hours was Pipe B turned on?

Who is the author of the book titled "Walking With The Comrades"?

Who was sworn in as the Prime Minister of Nepal in 2015?

In which of the following is true for instruments of Monetary Policy?

Study the histogram of marks (in Mathematics) distribution of 50 students of class IX and answer the following questions.

The average marks of the students are

If the 1st and the 3rd term of an arithmetic progression are -10 and -4, what is the 12th term?

Who is the current chairman of All India Council for Technical Education (AICTE)?

Which of the following is the prime number series from 1 to 20?