I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

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?

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

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Find the next number in the sequence

1, 2, 6, 21, 88, __?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you count the number of triangles in the given picture?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

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.

I taste better than I can smell. Who am I?