Why did the Girl throw the butter out of the window?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

Which country gets ill every time?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

What is at the end of a rainbow?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

The centre of the third figure is empty. What digit should fit inside?