How many triangles can you find in this given picture?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

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

Can you identify if it's a murder or a suicide ?

How can you make a TV, a bed, a dog, and a car liquid?

how come the second man dies?

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

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