question_answer

A train is going from Mumbai to Pune 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)  \[{}^{15}{{C}_{3}}\]            

B)  \[{}^{15}{{C}_{13}}\,\]

C)  \[{}^{3}{{C}_{1}}\,\]            

D)  \[{}^{15}{{C}_{1}}\,\]