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

I have no life, but I can die. What am I?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

I don't get anymore wetter, no matter how much rain falls on me.

What word begins and ends with an E, but has only one letter?

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

Explain?

Can you solve this picture maths equation?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

What jumps when it walks and sits when it stands?