65. (1) Save as provided in the last preceding section, all questions at any sitting or joint sitting of the Houses shall be determined by a majority of votes of the members present and voting, other than the Chairman or person acting as such.

The Chairman or Speaker or person acting as such shall not vote in the first instance but shall have and exercise a casting vote in the case of an equality of votes.

(2) A House of the Federal Parliament shall have power to act notwithstanding any vacancy in the membership thereof, and any proceedings in the Federal Parliament shall be valid notwithstanding that it is discovered subsequently that some person who was not entitled so to do sat or voted or otherwise took part in the proceedings.

(3) If at any time during a meeting of a House, less than one-sixth of the total number of members of the House are present, it shall be the duty of the Chairman or Speaker or person acting as such either to adjourn the House, or to the meeting until at least one-sixth of the members are present.