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

How many triangles can you find in this given picture?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

How many times in a given day, minutes and hour clock comes in a straight line ?

What does this rebus means ?

PROG WORKRESS

Let's play a word game. Following are some meaningless words that can be completed by adding random letters on either side of the word.

For example, the word "rdo" can be formed into "pardon".

Using the same technique, can you complete the given words?
ecalc
airb
rinci
tibac
uidel
gorit
igna
eyho

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What building has the most stories?

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

There was a man he lives in a hotel each morning he presses the first floor button each evening if there is a person in the elevator he asks him to press the 10 floor button if there is no one in the elevator he takes the stairs why.