Question

6. There are 3 ways by which a man can go from
Guwahati to Calcutta, and 7 ways from Calcutta to
Delhi. In how many ways can a man go from Guwahati
to Delhi via Calcutta?​

Answer 1

There are combined four(4) ways to go to Dehi from guhawati and vice versa.

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Answer 2

Answer:

he can go from guwahati to delhi in 21 ways as 3×7=21