what does the below math rebus puzzle mean?

What have one eye but still cannot see?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Find the next number in the series.
1 10 24 43 67 ?

What does below chemistry rebus means?

Imagine you are in a room with no windows or doors. How will you get out?

John was piloting a plane behind a car but was never able to overtake it. Why?

Forwards I am heavy, backward I am not. What am I?

Which five letter word can be added at the end of below word to form a
valid word?

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A man was convicted of a minor offence in Akbar court. Akbar decided to give him a chance. He asked him to give a statement. If the statement is true, he will be killed by lions and if it is false, he will be killed by trampling of wild elephants.

The convicted person requested help from Birbal and since the crime was not a big one, Birbal decided to help him. Whatever Birbal suggested impressed Kabir and he let the convicted person go.

What did Birbal suggest to the person?