In the image below, can you find the value of an angle(y)

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

You need to move three matchsticks to form three squares. Can you do it?

What four weights can be used to balance from 1 to 30 pounds?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

I cannot talk, but I always reply when spoken to. What am I?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Replace the question mark with the correct number in below Picture: