You need to arrange three 7 and mathematical symbols to form number 1?

What goes up but never comes down?

I am white when I am dirty, and black when I am clean. What am I?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

There is something which you can be arrested for attempting but not for successfully completing.

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

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..