The coordinates the discussions in the vidhan sabha. a, speaker.
b, chairman.
c, chief minister.

Explanation:

thespeaker coordinates the discussions in the vidhan sabha.

satin. 

"very shiny satin may look great in the fabric store or in the sewing room, but once onstage it can look fake and cheap as it reflects the light from the fixtures."

including the octave, the answer would 8 notes in a major scale with one note being played twice. ex) c major scale includes: c, d, e, f, g, a, b, c

notice that c is played twice

however, if you were to ask me how many different notes are in a major scale- the answer would be 7.