Can you replace the question mark with the correct number?

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

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

John was drowned by he was not wet. How?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

Make a sentence consisting of three words that have the whole alphabet.

You have a square. What you have to do is cut and reassemble the square such that you create a Red Cross sign that has the same volume as that of the square.