Ketu aspects which houses?

Hello,
please answer:
Keu aspects 5 7 9 houses or will not consider?

Only position of Ketu should be considered ..like in which sign and nakshatra it is situated.The sign lord and nakshatara lord will be represented by ketu for mahadasa as well as antardasa.Aspect of ketu has least effect on any house in the chart as you mentioned.

-Anup
kascorner.com