A Straight Road Runs From North To South. It Has Two Turnings Towards East And Three Turnings Towards West. In How Many Ways Can A Person Coming From East Get On The Road And Go West?


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If the main road running North to South has two-way traffic (and if each side road allows traffic from the East to the West) then there are six possibilities: 2 x 3 = 6.  

If the main road is one-way from the North to the South , then depending on the position of the side roads and the direction of their traffic, the answer could be anything from 0 to 6.

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