There are 10 stations between Trichy and Chennai. How many second class tickets have to be printed, so that a passenger can travel from any station to any other station?	Select:  A) 133  B) 132  C) 134  D) 135  E) 136
The total number of stations = 12   From 12 stations we have to choose any two stations and the direction of travel (i.e.,Trichy to Chennai is different from Chennai to Trichy) in 12P2 ways.   12P2= 12 * 11= 
<gadget id="calculator">12 * 11</gadget>
<output>132</output>
132   ANSWER: 132
<result>B</result>
There are 10 stations between Trichy and Chennai. How many second class tickets have to be printed, so that a passenger can travel from any station to any other station?