What seven-letter word has hundreds of letters in it?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

You bought me for dinner but never eat me. What am I?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

The pound is not a finish.

We are sharing a few instructions below, which you have to use in any suitable order to modify the above sentence such that the end sentence is a scientific fact.

- Eliminate a letter and supplement another in its place.
- Take away one word.
- Remove one letter from one word.
- Get rid of two letters from one word.
- Swap a word with its antonym.

What time is it when an elephant sits on a fence?

What has 13 hearts but no other organs?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What is the largest number you can write with just 3 digits?