If an electric train is travelling south, then which way is the smoke going?

What does an Island and the letter T have in common?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

If you say my name, I will no longer exist. What am I?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

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

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

Which part of London exists in France as well ?