Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Find the missing number in the sequence below:

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

What can you hold in your right hand, but never in your left hand?