A tank is fitted with 8 pipes, some of them that fill the tank and others that are waste pipe meant to those that empty the tank can empty it in 6 hours. If all the pipes are kept open when the tank is full, it will take exactly 6 hours for the tank to empty. How many of these are these are fill pipes?

Rehana leaves her home early in the morning so that she can reach her office on time. If she walks at the rate...

Certain numbers of children were playing a game of football. There was a trial taking place on the field. In t...

Which of the following number is not a prefect square?

What is the radius of the in-circle of the triangle whose sides measure 5 12 and 13 units?

A car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when drives on...

Annie invested a certain sum of money in a bank that paid simple interest. The amount grew to Tk 240 at the en...