How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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?

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

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

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

How do you go from 98 to 720 using just one letter?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?