a = 1000, b = 1001, c = 1002, then value of a^2 + b^2 + c^2 - ab - bc - ca
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India's total area accounts for about 2.4% of the total geographical area of the world. Thus, it is the 7th largest country in the world, by its size. India has a land boundary of about 15,200 km. The total length of the coastline of
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