Can you find a number that lies one third of the distance between 1/3 and 2/3?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

John went to a parrot shop in Mexico, and the parrot owner told him that his parrot is so unique that he repeats everything he hears. John got excited and immediately bought the parrot. John went home and spoke many words, but the parrot does not repeat anything.
He went again to the parrot shop and complaint to the shopkeeper, but the shopkeeper never lied. Explain?

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

What is more useful when it is broken?

You can hear me, but you can't touch or see me.

What am I?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

Can you find out the missing number in the grid?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

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 ?