Which number should replace the question mark?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

How many triangles are there on the puzzle below?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

What type of tree can I carry in my hand?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

You are given four results as below:
1111 = F
2222 = E
3333 = T
Then, can you find out how to code 4444?

What you cannot hold but it is yours?