**x** billion. They invest half of the total money plus ₹**$\frac{1}{2}$** billion on first player. On the second player, They invest half of the rest plus ₹**$\frac{1}{2}$** billion, and so on. On the eleventh (*i.e.* last) player they invest half of what remains plus ₹**$\frac{1}{2}$** billion. And finish all their money. Find the value of **x** (in billion).