how many doors should a house have according to vastu?

according to door vastu for flats,the main door of the home should be the largest door of the home and should be placed in the north,east or north-east direction.
KEEP IS EVEN:
the number of doors and windows at home should always be even and in multiples of two, like two, four,six.
SIZE MATTERS:
the sizes of all doors at home should be of the same size,with the exception of the front door.if you still want to make some doors bigger, then make sure they are placed in the south or west direction, instead of the north or east.