Related Questions

I have left the room but he (enter) the room.
There are 5 doors to a lecture room. In how many ways can a student enter the room through a door and leave the room by a different door?
The charge of a room at Sheraton is 25% less than that of a room at Westin and 10% less than that of a room at Sonargaon . By what percent is the charge of a room at Westin is greater than that of Sonargaon ?
There are 3 doors to a lecture room, In how many ways can a lecturer enter and leave the room?
There are 3 doors to a lecture room. In how many ways can a lecturer enter the room from one door and leave from another door ? 
In a room there are six Bengali, twelve engineers and fifteen football players. Only one of them was a bengali Engineer who played Football. Two were Bengali Engineers but did not play football and two were Bengali football players and were not engineers. If there were 24 people in the room, and at least one of them were Bengali, engineer or a football player, how many were engineers and played football but not bngali?
The length of a room is 1.5 times of its breadth. If the area of the room is 216 sq. meter, what is the perimeter of the room?
In a room, all except 18 of the people are over 50 years of age. 15 of the people in the room are under 50 years of age. If 10% of the people are at the age of 50 years, how many people are in the room>
A room contains 200 people, 25% of whom are graduates. A group of people, 30% of whom are graduates, leave the room. Of the remaining people, 10% are graduates. How many people did leave the room?
The length of room is 1.5 times of its breadth. If the area of the room is 216 sq. meters , what is the perimeter of the room ?