What does the below rebus riddle means?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

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

Who has married many women but was never married?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

Which is heavier: a ton of bricks or a ton of feathers?

A Club organizes a Running Race, and John, Jacob, Minda, and Tony participated.

The results are as follows

John beats Jacob
Minda beats Toni
Toni beats John

Who came first in the race?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I travel all around the world but always stay in the corner. What am I?

The cream is heavier than Milk. True or False?