What is always in front of you but can’t be seen?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

How can you make number one disappear by adding something to it?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Make a sentence consisting of three words that have the whole alphabet.

I don't get anymore wetter, no matter how much rain falls on me.

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?