Arithmetic Ability
Permutations and Combinations

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Q.

Suppose you can travel from a place A to a place B by 3 buses, from place B to place C by 4 buses, from place C to place D by 2 buses and from place D to place E by 3 buses. In how many ways can you travel ?from A to E?

View Answer

Correct choice: D

Explanation:

The bus fromA to B can be selected in 3 ways. The bus from B to C can be selected in 4 ways. The bus from C toD can be selected in 2 ways. The bus fromD to E can be selected in 3 ways. So, by the General Counting Principle, one can travel fromA to E in 3 x 4 x 2 x 3 ways = 72
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