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amit singh Grade:
        rajdhani express from delhi to bombay stops at 9 intermediate stations 6 passengers enters the train during journey holding 6 different tickets of the same class.how many different sets of tickets they may have had. 

plz give full solution
6 years ago

Answers : (1)

Jayesh Arun Kadam
34 Points
										

Let S1,S2....S9 be intermadiate stations


The person taking train from the station Si(1≤i≤9) can get down any of the next (10-i) stations.


 Total no of possible tickets


=∑9i=1(10-i) =45


The six different tickets must be out of these 45 tickets.


Required number of ways = 45C45C39  .


6 years ago
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