People make me, save me, change me, raise me. What am I?

Can you count the number of triangles in the given figure?

Christina is practising her dance steps along with her friends. In a particular sequence, all of them form a row. At that point, Niharika is standing in the 4th position from either end of the row.
Can you find out how many girls are practising together?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Can you name some countries which do not have the alphabet 'A' in them?

Replace the question mark with the correct number.

You need to move three matchsticks to form three squares. Can you do it?

I got a bee but no honey.
got an eye but am still blind.
got a sea but no water.
got a tea but no coffee.
got a why but no answer.

What Am I?

What has many teeth, but cannot bite?

What is red and smells like blue paint?