how long is a generation?
155221
We are told, in Matthew, that there are 14 generations between Abraham and David, between David and captivity to Babylon, and between Babylon and Christ. This equals 42 generations between Abraham and Christ. It is suggested that there are about 2,160 years between Abraham and Christ. 2,160 divided by 42 equals 51.4 years per generation. \n\nOther speculations about the length of a generation include 70 years, 100 years or even 40 years because that is how long the Israelites wandered in the wilderness. Some say the “final generation” began when Israel became a nation. Others contend that, while Israel becoming a nation was extremely important, it wasn’t until 1967, when it reclaimed Jerusalem, that it could be considered to have “bloomed.” It is clear that we cannot know for sure the timing of the Lord’s return. But it is obvious that we are close--close enough to count the days!
622789
A baby boomer is someone who was born during the period of increased birth rates when economic prosperity arose in many countries following World War II. In the United States, the term is iconic and more properly capitalized as Baby Boomers and commonly applied to people with birth years from the span 1946 to 1964, which may comprise more than one generation. The Baby Boom is the iconic term widely used to refer to the American population and culture in particular, as post WW II demographics abroad did not mirror the sustained growth in American families over the same interval.\n\nSo, baby boomers are between 42 and 60.
563891
Between 10 & 15 generations on my moms side and 4 on my fathers.\n\nOn my moms side we have been traced back to England and coming over during the first settlement here in America.  We have recoreds prior to that in England and Germany.  My father side we can trace back to my great grandmother who was a slave in Kingston, Jamacia.  She was freed in the 1920's and came to America where my grandfather was born.
1096393
So far I have found no reference in the Bible to the age of the earth or indeed the universe.\n\nTo iMi: I agree that looking at ages in the genealogies would indicate approximately 6000 years of history.\n\nHowever, the Hebrew word that is translated as "created" in Genesis 1:1 generally applies perfection, orderliness, completeness, etc. In Genesis 1:2 everything is in chaos. How much time elapsed between Genesis 1:1 and Genesis 1:2? I think there is any way for us to know.
227835
The first species of the genus Homo appeared about 2.5 million years ago.  The first Homo sapiens appeared about 160,000 years ago.\n\nDuring the last 1500 years and before the advent of birth control, the average length of a generation has been 30 years.  This is known from accurate genealogical records.  It is calculated by dividing the number of generations into the years elapsed.  I'm sorry I don't have a reference for this.  It is born out by my own genealogical work with numerous lines over 10 generations and the lineage of an acquaintance who was descended from Mohammed (his was 29.5).  Also, I have seen many other genealogical results close to 30 years per generation.\n\nUsing 30 years per generation, Homo appeared 83,000 generations ago and Homo sapiens appeared 5,300 generations ago.
452046
The human population did NOT start out as two (this readily confirmed by analysis of genes found in different groups of humans across the globe).  Also, Earth is some 4.57 billion years old.  Additionally, humans have existed for several million years.\n\n\nOkay...I'll humor you...\n\n-a human generation is 20 years\n-there are only 300 generations in 6000 years\n-before healtcare each generation more or less had enough time to mature and then have offspring\n-human births are risky compared to other animals and can possibly kill the mother\n-average lifespans before healthcare is estimated 20-35\n-sexual maturity generally occurs between 12-14\n-lifespan has only started increasing since 1800 so that is 200 years or 10 generations\n-Therefore to get and maintain 6.5 billion each successive generation had to have an increase of 21,666,666.667 individuals or more per generation to get from 2 to the 6.5 billion in the necessary time AND maintain population size.\n\nTherefore it is NOT possible for humans to have started from a population of 2 and increase up to 6.5 billion considering all factors involved.
258248
One year and 10 months old.  \n\nYou take 1 million minutes, divide by 60 to get how many hours they have lived, divide by 24 to get how many days they have lived, divide by 365 to get how many years they have lived.  You arrive at 1.9 years, which is the same as 1 year 10 months.
66159
The generally accepted age for the Earth and the rest of the solar system is about 4.55 billion years. I am not an expert on this matter, but I believe in science. If someday people find new convincing theories, I will be very open to accept them. But only 6000 years old? Come on, I don't buy it.
75587
Methuselah - 969 years old.\n\n"And all the days of Methuselah were nine hundred sixty and nine years" (Genesis 5:27)
859564
Historical estimates say about 200 million.  \n\nSorry, can't help you with the math...\n\nhttp://www.census.gov/ipc/www/worldhis.html\n\nPlus you're assuming a doubling of population every generation.  Not everybody had children.
828503
it depends - if you go over 100 generations you may have them all over the world.
714114
............... every generation is ..............
43948
The sky covers whole generation.\nThe skirt covers the generation hole.\n;)
74709
My guess is that the term "Generation X" was coined somewhere in a popular newspaper or magazine and then people started copying it.  "Generation Y" is just a borrowing of Generation X (but tne next one).  I have no evidence whatsoever to back up this idea, but a little Internet searching might reveal what were the first times the terms were used.
719683
1 decade = 10 years\n3 decades = 3 x 10 years = 30 years
182620
Generation X- "people born in the Western world (especially people born in Australia, Canada, New Zealand, the United States and the United Kingdom) following the post-World War II baby boom generation. Roguhly 1960 - early 1980s." (Wikipedia)\n\n      **"the "X" of Generation X referred to the namelessness of a generation that was coming into an awareness of its existence as a separate group while at the same time feeling completely dwarfed and culturally overshadowed by the Baby Boom generation" (Wikipedia)\n\nGeneration Y- "Generation Y are Americans born immediately after "Generation X" (Wikipedia) (1984 - 2000)\n\n** Y follows X hence the name (also called Echo-boomers)
154894
If you begin with a single female, for the first generation, 40 moths will survive (1/3 of 120).  For the second gereration, the 20 females (1/2 of the survivors) will produce 800 surviving offspring (1/3 of 20 x 120), one-half of which are females (400).  Continue the sequence to the 5th generation, then add the total males and females during the year .  Your answer will be  little more than 3 million of each. Note that the original female is not counted as a generation, as she is already an adult at the beginning of the year.  Also, it is assumed that a female lays 120 eggs only, no more and no less.