If there are 4 routes between Delhi and Mumbai In how many different ways can a man go - Maths - Permutations and Combinations

Question

If there are 4 routes between Delhi and Mumbai In how many
different ways can a man go from Delhi to Mumbai and return , if
for returning
(i) any of the routes is taken
(i) the same route is not taken

Subham · Accepted Answer

final ans is :-
(i) 4*4=16
(ii) 4*3=12

If there are 4 routes between Delhi and Mumbai. In how many different ways can a man go from Delhi to Mumbai and return , if for returning (i) any of the routes is taken (i) the same route is not taken .

If there are 4 routes between Delhi and Mumbai. In how many different ways can a man go from Delhi to Mumbai and return , if for returning

(i) any of the routes is taken

(i) the same route is not taken .