(a) a simple majority of members present and voting
In India, if a bill has been rejected by any house of the parliament and if more than six months have elapsed, the President may summon a joint session for purpose of passing the bill. The bill is passed by a simple majority of a joint sitting. Joint sitting is an extra-ordinary machinery provided by the constitution to resolve a deadlock between the two houses over the passage of a bill.
If the bill in dispute is passed by a majority of the total number of member both the houses present and voting in the joint sitting, the bill is deemed to have been passed by both the houses.