In a network of railways, a small island has 15 stations. Find the number of different types of tickets to be printed for each class, if every stations must have tickets for other stations.

There are 17 stations from Howrah to Bandel on the railway line . How many kinds of different single third class tickets must be printed so as to enable a passenger to travel from one station to another?

There are 12 stations on a certain railway line . How many different kinds of tickets of class II must be printed in order that a passenger may go from any one station to any other ?

There are 13 stations on a certain railway line.How many kinds of different single third class tickets have to be printed in order that it may be possible to travel from any station to any other?

Rajdhani Express going from Bombay to Delhi stops at five intermediate stations, 10 passengers enter the train during the journey with 10 different ticket of two class. The number of different sets of tickets they may have is a. ""^15 C_(10) b. ""^20 C_(10) c. ""^30 C_(10) d. none of these

Two friends Aa n dB have equal number of daughters. There are three cinema tickets which are to be distributed among the daughters of Aa n dB . The probability that all the tickets go to the daughters of A is 1/20. Find the number of daughters each of them have.

Two trains leave a railway station at the same time. The first train travels towards west and the second train towards north. The first train travels 5 km/hr faster than the second train. If after two hours they are 50 km. apart, find the average speed of each train.

A train is going from kolkata to Delhi stops at nine intermediate stations. Six persons enter the train during the journey with six different tickets. How many different sets of tickets they have had ?

There are three stations A, B and C . If five routes for going from station A to station B and four routes for going from station B to station C, than find the number of different ways through which a person can go from A to C via B.

In a class tournament, all participants were to plan different game with one another. Two players fell ill after having played three games each. If the total number of games played in the tournament is equal to 84, the total number of participants in the beginning was equal to a. 10 b. 15 c. 12 d. 14

Ghanshyambabu deposited his savings equally in two banks, one with a rate of simple interest of 14(1)/(2)% per annum and the other at a rate of simple interest of 15% per annum. If the difference of the interests obtained by him from two banks be rs. Rs4720 , then find the principals he has deposited in each bank.