Harry walks from his house at A to his office at B, by taking the shortest path. Find in how many ways Harry can go from A to B moving only Up or Right at every intersection of roads.

5

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30

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120

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20

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Solution

The correct option is D $20$

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Harry walks from his house at A to his office at B, by taking the shortest path. Find in how many ways Harry can go from A to B moving only Up or Right at every intersection of roads.

The correct option is D 20

The correct option is D $20$