How many people have ever lived?

Answer 1

Including the 7 plus billion people on earth today there were approximately 15 billion people that were born. That is tallied up since the creation of Adam and Eve. The Bible shows that man has been on earth for a little over 6,000 years. 6,000 years were up in 1975 C.E. The dates was compiled using God's holy word the Bible.
106.5 Billion people have lived on the earth ever. According to "Who wants to be a Millionaire"

Answer 2

The right answer is that around 90 - 110 billion people ever existed. It is hard to estimate how many people ever lived as you have to go way back before records began.