What does this rebus mean?

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Count the number of balls in picture below:

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

You are playing as white and given four rooks to checkmate the black king in four moves with the following rules 1. You can place one rook every move and ensure the black king should be in check position.2. After four moves the black king should be in the checkmate position.

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

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

Can you find out the remainder when 3^300 is divided by 5?

What do you think with the below Picture ?

If you say my name, I will no longer exist. What am I?

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