Replace the question mark with the correct number in below Picture:

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

What can go up a chimney down, but can’t go down a chimney up?

Can you count the number of triangles in the given figure?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

What has one eye, but can’t see?

What can you catch but never throw?

If EELS + MARK + BEST + WARY = EASY

What does HELP + BARK + WARD + LEAD equal?

If Rajina's daughter is my daughter's mom, who am I to Rajina?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?