What happened when the wheel was invented?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Count the Triangle in the figure given below:

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

What can go up a chimney down, but can’t go down a chimney up?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

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

What is the end of everything?

Can you solve this picture maths equation?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?