Spot what is wrong here in below Picture?

If 21x = 79x, what is the value of x?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

The more you take me, the more you leave me behind.
Who Am I?

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

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

What part of the chicken has the most feathers?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?