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

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

Find the next number in the series.
1 10 24 43 67 ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

Why did the Girl throw the butter out of the window?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?