What goes up but never comes down?

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?

How many letters are in the alphabet?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What is the riddle which can be asked all day with a different correct answer each time.

Which is the correct shadow of the bird?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Why do you find that most of the buildings are deprived of the 13th floor?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?