Can you replace the question mark with the correct number?

Can you fill the blank with the correct number?

6 30 870 756030 _____

There is so small cabin inside a deep forest.
All the forest burned out to worst possible but the inside of the cabin is still the same.
However all the person inside the cabin die.

How come ?

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?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

What is the last thing you take off before bed?

John is the son of Jacob.
So,
Jacob is the_____of John's father?