Identify the hidden meaning behind this picture?

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

How is the moon similar to a dollar?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Which five letter word can be added at the end of below word to form a
valid word?

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It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Which part of London exists in France as well ?

There is a place where if I stand up straight, I will still be considered sideways.