Why is Saturday stronger than Monday?

Find the value of "?" in the ball picture Riddle below:

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

Who is that with a neck and no head, two arms and no hands? What is it?

I have branches, but no fruit, trunk or leaves. What am I?

Which tank will fill first?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

Find the last number in the series below:

voN luJ yaM raM ---