A point charge Q is placed at the corner F of a cube. Then electric flux through the face ABCD is

Net charge enclosed by the cube =Q8Net flux over its surface =Q8ε0Flux through the three surfaces EFGH, BFGC and AEFB is zero.So the net flux is equally shared by remaining three surfaces. Flux through ABCD =13 x Q8ε0=Q24ε0