In a survey, 300 respondents were asked whether they own a vehicle or not. If yes, they were further asked to mention whether they own a […]

When a point inside of a tetrahedron (a solid with four triangular surfaces) is connected by straight lines to its corners, how many (new) internal planes […]

Consider a Boolean function f(w, x, y, z) such that                f(w, 0, 0, z) = 1                f(1, x, 1, z) = x + z                f(w, 1, […]