1) A large cube is formed using 125 identical smaller cubes and is placed at the corner of a large room.How many such smaller cubes are required to cover the large cube completely, so that the figure obtained also must be a cube? A) 91 B) 96 C) 75 D) 127 Answer: Option AExplanation:Number of cubes required $=(5+1)^{3}-5^{3}$ $=91$
