Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

What building has the most stories?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

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

As a whole I am both
safe and secure.

Behead me and I become
a place of meeting.

Behead me again and I am
the partner of ready.

Restore me, and I become
the domain of beasts.

What am I?