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

Can you count the number of matches in the picture below ?

I am the fastest animal but cannot climb the tree. What am I?

What jumps when it walks and sits when it stands?

A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?

Can you name an animal whose killing cannot be performed without spilling your own blood?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

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

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?