A car driver knows four different routes from Delhi to Amristsar to pathankot he knows three different routes and from pathankot to jammu he knows two different routes How many routes does he know from Delhi to jammu?

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Solution

The correct option is D 24
The car driver can reach Amrister in 4 ways
From each of these four ways he can reach Pathankot in 3 different ways and so he can reach from Delhi to Pathankot in (4×3) i.e 12 ways Again from Pathankot to Jammu there are 2 ways Hence he can reach Jammu from Delhi in (12×2)i.e in 24 ways.

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