Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

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

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

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

With the help clues provided in the image, can you find the 5 digit key?

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

What can you see in the middle of March and April that you can never see in any other month?