Can you find out who is the kidnapper in below Picture and why, Explain ?

Why Aeroplane windows are round?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

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?

Suppose you are sitting in an interview and the interviewee asks you an aptitude question.

You have three buckets with a capacity of 4 litres, 8 litres and 10 litres and you have a large tank of water. Now you have to measure 3 litres of water precisely using those buckets. How will you do it?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?