What two things can you never eat for breakfast?

The more you take me, the more you leave me behind.
Who Am I?

People put me on the table and cut me but do not eat me. What am I?

Count the number of triangles in the given picture.

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

There was a greenhouse.
Inside the greenhouse, there is a white house.
Inside the white house, there is a red house.
Inside the red house, there are lots of babies.

What is It?

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?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

Can you fill the blank with the correct number?

6 30 870 756030 _____