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who becomes president if the president and vice president die in india
An election to fill a vacancy in the office of President occurring by reason of his death, resignation or removal, or otherwise shall be held as soon as possible after.
how is the president elected in india
The president is indirectly elected by an electoral college comprising the Parliament of India and the legislative assemblies of each of India's states and territories, who are all directly elected.

Question: when did the country become independent
Self-contained rewrite: when did india achieve independence