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

Can you place six X (crosses) in below board without making three in a row in any way ?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

In the addition below, all digits have been replaced by letters. Equal letters represent equal digits and different letters represent different digits.
ABCABA
BBDCAA
ABEABB
ABDBAA
------- +
AAFGBDH
What does the complete addition look like in digits?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Sally lives in a place where six months of the year is mild summer and the temperature drops significantly the other six months. She owns a lake where there is a small island. She wants to build a house on the island and needs to get materials there. She doesn’t have a boat, plane, or anything to transport them to the island. How does Sally solve this problem?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Can you count the number of blocks in the picture below?