There are 7 routes from station X to station Y. In how many ways one may go from X to Y and return if for returning one makes a choice of any of the routes?

Permutations and Combinations

Question : 26 of 56

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There are 7 routes from station

X

to station Y. In how many ways one may go from

X

Y

and return if for returning one makes a choice of any of the routes?

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