Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Solve the rebus riddle in the picture below.

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

What you cannot hold but it is yours?

In an office's desk, you find a unique method that shows the current day of the month. Two numbered cubes are used to depict the current date.

Can you find out the numbers on both the cubes so that each date can be mentioned using them?

Please note that you have to use both the cubes to display any date. Thus the 1st day must be represented by 01 and so on.

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

Can you make the number 24 by utilizing the numbers 1, 3, 4 and 6? You must use one number only one time and you can use mathematical operation symbols anytime anywhere.

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1