Find the value of "?" in the ball picture Riddle below:

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

What Am I?

Kareena is older than Bipasha. Bipasha is younger than Karishma and younger than Katrina. Katrina is older than Kareena and Alonso, who are older than Karishma.If Alonso and Kareena are twins, who's oldest?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

How many times can you subtract the number two from the number fifty?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Count the number of triangles in the given picture.

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

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

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?