18.- Terence is a gambler who has money when it plays dice .

He always does the same way : win or lose, bet half the money you have ; the second play , bet half the money you have time; on the third play , half of what he has after the second ; and so on.
One evening was 16 euros and played 6 times , won three and lost three others.
How much money runs out?

 

-- Solving the riddle --