Solve below rebus puzzle?

What is the next number in the series?

15 29 56 108 208 ?

What has many keys but can’t open a single lock?

What kind of tree can you carry in your hand?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

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

Can you write down eight eights so that they add up to one thousand?

All of you like to eat me. I am a five-lettered word. Remove the first two and I turn into an infamous animal. Remove just the first and I become a heinous crime. Remove the first and the last and you can groove on me.

Can you guess who am I?

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.