In a certain colony of cancerous cells, each cell divides into 2 every hour. How many new cells will be produced from a single productive cell if this division continues for 10 hours and it is known that only 50% of the cells are capable enough to produce next generation cells? (Post explanation)

1) 2^9 -1
2) 2^10
3) 2^9
4) 2^10 -1