What runs around the whole yard without moving?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Why is a river so rich ?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

Which five letter word can be added at the end of below word to form a
valid word?

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What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?