once every 500,000 births
It is approximately 1:750000 so approximately 177 sets of quads are born each year however many of these are reduced to triplets or twins due to complications.
The Fink triplets, born around the turn of the century
how many twins are born inMaryland each year
937 Premature babies are born each year
about 50 million are born every year
The answer is they are part of a set of triplets.
200
100000000
They are triplets
32
About 3,890,000 each year.
never