About 1 in 90 human births (1.1%) results from a twin pregnancy. The rate of dizygotic twinning varies greatly among ethnic groups, ranging as high as about 45 per 1000 births (4.5%) for the Yoruba to 10% for Linha Sao São, pedro a Tiny brazilian settlement which belongs to the city Of Candido. cândido godoi godói
https://en.wikipedia.org/wiki/Twin
Conjoined twins are identical twins joined in utero. A rare phenomenon, the occurrence is estimated to range from 1 in 49,000 births to 1 in 189,000 births, with a somewhat higher incidence in Southeast Asia, Africa and Brazil.
https://en.wikipedia.org/wiki/Conjoined_twins
There are many living sets of sextuplets in the world, here are  some including their last names:    1. Dilley   2. Haner   3. Boniello   4. Headrick   … 5. Harris   6. Perry   7. Van Houten   8.
http://www.answers.com/Q/How_many_sets_of_twins_are_there_in_the_world
Those numbers have lowered to 1 in 38 for twins with fertility methods, as well as lowering the numbers for all other multiples. It is estimated that 60% of triplets are from fertility treatments, 90% of quadruplets are from fertility treatments, and 99% of quintuplets are due to fertility treatments. If You Are A Twin (Or Have Twins In Your Family) If you are a fraternal twin, you have a 1 in 17 chance of having twins. If you are identical, it doesn't affect your chances, and they remain from 1 in anywhere from 38 - 90, depending on if fertility drugs are used or not. If your mother is a fraternal twin, you may have a higher than average chance of twins.
http://twinstwice.com/twins.html
1 Minnesota Twins (4350-4408 W-L, 1961 - 2015) - 2 World Championships, 3 Pennants, and 11 Playoff Appearances.
http://www.baseball-reference.com/teams/MIN/
Quoth the wikipedia: ---------------------------------------------------------   There are estimated to be approximately 125 million human twins and triplets in the wor … ld (roughly 1.9% of the world population), and just 10 million monozygotic twins (roughly 0.2% of the world population and 8% of all twins).
http://www.answers.com/Q/How_many_sets_of_twins_are_there_in_the_world
Among non-twin births, male singletons are slightly (about five percent) more common than female singletons. The rates for singletons vary slightly by country. For example, the sex ratio of birth in the US is 1.05 males/female, while it is 1.07 males/female in Italy.
https://en.wikipedia.org/wiki/Twin
In Central Africa there are 18–30 twin sets (or 36–60 twins) per 1,000 live births. In Latin America, South Asia, and Southeast Asia, the lowest rates are found; only 6–9 twin sets per 1,000 live births. North America and Europe have intermediate rates of 9–16 twin sets per 1,000 live births. Multiple pregnancies are much less likely to carry to full term than single births, with twin pregnancies lasting only 37 weeks (3 weeks less than full term) on average.
https://en.wikipedia.org/wiki/Twin
I don't know exactly how many were killed in the Holocaust, but about 1,500 sets of twins (3,000 individuals) were experimented on in the hands of Josef Mengele. I estimated t … hat somewhere between 50 and 200 sets survived. 2 people found this useful.
http://www.answers.com/Q/How_many_sets_of_twins_are_there_in_the_world
93% of triplets and higher will be less than 5lbs 5ozs, compared to 6% of singletons. About 35% of twins are left-handed, double the rate of the general population. 1 in 4 IVF births results in twins, 1 in 22 IVF births results in triplets. Children of identical twins are genetically half siblings.
http://twinstwice.com/twins.html
how many twins are in the world
There are 18 to 30 twins in the world.