1.

Ranchi - Patna Jan Shatabdi Express going from Ranchi to Patna and makes 5 stops on the way. 3 persons enter the train during the journey with 3 different tickets. How many different sets of tickets they may have had?

A. 15C3
B. 12C3
C. 15C9
D. 12C9
E. None of these
Answer» B. 12C3


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