I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Why Aeroplane windows are round?

Count the number of triangles in the picture below:

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

You Throw The Outside, Cook The Inside
Eat The Outside, Throw The Inside.

What Is It?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What can you catch but never throw?

I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Replace the question mark with the correct number in below Picture:

Count the Triangle in the figure given below: