There are 14 railway stations along a line. Number of ways of selecting 3 stations out of them to stop the train such that no two stops are adjacent is

There are n stations in a railway line.The number of way of choosing r stations such that no two of them are consecutive is

10 persons are seated at round table then the number of ways of selecting 3 persons out of them if no two persons are adjacent to each other is

There are 10 stations on a circular path. A train has to stop at 4 stations such that no two stations are adjacent. The number of such selections must be:

There are 10 stations on a circular path.A train has to stop at 3 stations such that no two stations are adjacent.The number of such selections must be: (A) 50 (B) 84 (C) 126 (D) 70

Between two junction stations A and B there are 12 intermediate stations. The number of ways in which a train can be made to stop at 4 of these stations so that no two of these halting stations are consecutive, is

Between two junction stations A and B, there are 12 intermediate stations. The number of ways in which a train can be made to stop at 4 of these stations so that no two of these halting stations are consecutive, is

Between two junction stations A and B there are 12 intermediate stations. The total numbre of ways in which a train can be made to stop at 4 of these stations so that no two of these halting stations are consecutive, is