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  • There are 18 stations between Hyderabad and Bangalore.
Question 1:
There are 18 stations between Hyderabad and Bangalore. How many second class tickets have to be printed, so that a passenger can travel from any station to any other station?
A. 200
B. 190
C. 95
D. 380
Feedback The total number of stations = 20
From 20 stations we have to choose any two stations and the direction of travel (i.e., Hyderabad to Bangalore is different from Bangalore to Hyderabad) in 20P2 ways.
20P2 = 20 * 19 = 380.

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