During which month do people sleep the least?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

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?

I make two people out of one. What am I?

500 women soldiers are arranged in an array of ten rows and fifty columns in accordance with their respective heights. Now, the tallest woman from each row is asked to move out in the front. From them, the shortest one is labelled as Alpha. They are then asked to resume their original position.

Now, the shortest woman in each column is asked to come out in front. The tallest among them is labelled as Beta.

Can you find out if Alpha will be taller or Beta?

The centre of the third figure is empty. What digit should fit inside?

In a jungle where there are no street lights or any other artificial source of lights, I notice a black snake crossing the road.
How did I get sight of the snake?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What four weights can be used to balance from 1 to 30 pounds?

I shave every day, but my beard stays the same. What am I?