hi my DD asking if anyone remember the answer to the cube qn in paper 1 booklet b coz he said some of his friends put 5 but he put 6… something like how many cubes maximum can be added so that front view and side view do not change

hi my DD asking if anyone remember the answer to the cube qn in paper 1 booklet b coz he said some of his friends put 5 but he put 6… something like how many cubes maximum can be added so that front view and side view do not change