What is the next number in this matchsticks series riddle?

What building has the most stories?

Which part of London exists in France as well ?

Out of four images which one is the odd one out?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

In a fruit store, there was a unique weighing machine that was made to weigh only cherries and strawberries as they were priced the same.

Other fruits like watermelons or mango had different machines as they were expensive.

A man successfully buys watermelons at the price of cherries. How?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What can you hold in your right hand, but never in your left hand?

I am lying and I always lie. Tell me whether I am lying or telling the truth.

What word begins and ends with an E, but has only one letter?