What does below rebus means ?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

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

What Adam and Eve do not have but the rest of the people have?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

Can you fill the blank with the correct number?

6 30 870 756030 _____

What begins with T, ends with T, and has T in it?

Find the number of squares in the below-given picture.

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

What work can one never finish?