Can you solve the below tricky visual equation?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

The cream is heavier than Milk. True or False?

There are 3 apples in the basket and you take away 2. How many apples do you have now?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

What have one eye but still cannot see?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?

I can be cracked, made, told, and played. What am I?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

No matter how little or how much you use me, you change me every month. What am I?