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

What does this rebus means ?

PROG WORKRESS

What number should come in place of the question mark below?

What building has the most stories?

I have teeth but i don't bite. Who Am I ?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

There was a kingdom in which the king had no heir to take over his thrown. Even the queen was dead and he himself was on the verge of dying. He thought about it and then summoned all of the teenagers. He gave one seed each to all of them and asked them to grow the plant. He announced that the one with the most beautiful plant will become the king/queen of the empire after the death of the king.

After a month, all of them were called. The king looked at all of the plants but announced the girl with an empty pot as the queen of the empire. Why?

What question can you never answer yes to?

Which tank will fill first?