OK, assuming that Adam and Eve were the first humans ever, and followiing the Bible’s description of humanity, how many people have died since the beginning of mankind all the way to today?
I just want to make sure there’s enough room in Heaven for me and enough room in Hell for that one kid back in third grade who stole my lunch.
If we make some assumption it’s kinda easy to get a result.
Let’s say that a human couple will produce 2 other fertile couple before they die and assume it has always been this way. Let’s also assume that the gene pool won’t get corrupted. Then :
After 3 generation, the population of earth was of 4 couple. Their ancestor ( we will assume their dead by the time the new generation comes in ) are 2 couple + 1 couple ( adam and eve ). That give 3 couple OR (N-1) couple where N equals the current number of couple.
Therefore, if we assume that there’s about 50% male in the current population of about 6billion. we got 3billion couple.
So about 3 billion - 1 couple died and their is 6 billion - 2 human being that died since adam and eve.
But, how can you be sure, i’ve made a lot of assumption but it should be a good aproximation. To have good result one would need to be a kick ass historian 
I would add that human being human their should be a lot more room in heaven then in hell, So we better be good man!!!