A) in how many ways can the rooms in a dorm be filled if there are 18 students applying for 4 available rooms (rooms provide similar conditions)? b) in how many ways can 2 students be selected from a group of 12 students for the positions of president, vice-president and a secretary?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. find the lateral area for the prism. l.a. = 0123456789