1.

There are five different roads connecting Agra and Delhi. In how many ways a person can complete his journey if he goes from Agra to Delhi by one road and returns by another road ?(a) 9 (b) 10(c) 15 (d) 20

Answer»

No. of roads by which he can go = 5

No. of roads by which he can return=4
(since it is GIVEN he cannot COME back from the same ROAD)

total no. of POSSIBILITIES = 4×5
= 20

Ans: (d) 20


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