Why Aeroplane windows are round?

I am quite hot but become too cold if you remove the first two letters. What am I?

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?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

I know a nine-letter word having only one vowel.
Do you ?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Imagine you are in a room with no windows or doors. How will you get out?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

What does this rebus puzzle means ?