In a public discussion a chairman asks questions of a panel of three. If to a particular question a majority of the panel answer ‘yes’ then a light will come on, while if to a particular question a majority of the panel answer ‘no’ then a buzzer will sound. The members of the panel record their answers by means of a two-position switch having position ‘1’ for ‘yes’ and position ‘0’ for ‘no’. Design a suitable circuit for the discussion.