. In a town railway station there are 25 stations on line. At each of the 25 stations the passengers can get tickets for any of the other 24 stations. How many different kinds of tickets do you think the ticket booker will have to keep?

A. 600
B. 250
C. 750
D. 315

• ans 600 tickets
  each station has 24 kinds of ticket for 24 different station
  24*(no of stations)
  24*25=600
  
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