RRB Government Jobs Exams

What part of the volume of a cube is the pyramid whose base is the base of thecube and whose vertex is the center of the cube?

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RRB Other Question

In a right pyramid, whose base is a square, a maximum cone is placed such thatits base is in the base of the pyramid and vertex at the vertex of the pyramid.Find the ratio of the volume of pyramid to that of the cone A and B are two sets such that A = {3, 4} and B = {1, 2, 3, 4, 5}. What is (A - B)*B?