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 .

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

(ii) 4*3=12.

  • -14

man can go delhi in 4 ways

(i) man can return in 4 ways

(ii) man can return in 3 ways

  • -9

(i)16

(ii)12

  • -6
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