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

Decode the below four famous ciphers:

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

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

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

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

What does a man do only once in his lifetime, but women do once a year after they are 29?