with the world population just over 7,000,000,000 people, prove that in less than a month one vampire could have the ability to infect the entire planet if they bit only two each day
1
3
9
27
n at day + 1 = n at previous day + 2 n previous = 3 n previuos
3^30 =2.05 *10^14
= 205 000 000 000 000