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Question

There are seven hemispherical containers of radius R

metres each and each of them is fully filled with water. The water in these is transferred to a hemispherical container of radius equal to 1.5 times of R such that a maximum number of smaller containers get emptied out. How many smaller containers remain fully filled when the larger container gets fully filled?

A 5

B 3

C 4

D 2

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UPSC EPFO (APFC)