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

The more it dries, the wetter it becomes. Can you tell what it is?

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

Can anyone tell me a word in the English dictionary which has a silent 'z'?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

There was a strange boy who was born before his father. How can this be possible?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

A man dies of old age on his 25 birthday. How is this possible?

I am 5 letters long.
My first two tell you who I am
My first 3 could be a medicine
My last three reversed could be a young boy.
My 4th, 3rd and 2nd in that order could be a fruit drink.
If you have me you may hang me round your neck
WHAT AM I ?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?