Why Aeroplane windows are round?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

What question can you never answer yes to?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

What word is pronounced the same if you take away four of its five letters?

What is the difference between a jeweller and a jailer?

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?