The number of sets of twins the researches studied would be dependant on the tests they were performing. Generally, researchers will gather between 5 and 10 sets of twins for research.
Yes, I have two sets of twins, and one set of triplets.
Yes, there is 4 sets of identical twins in every 1000 births.
2
twins
"She's expecting twins." "Pair of twins" is redundant, as twins don't come in sets of three.
If there are two twins, the answer is 2 If there are two sets of twins the aswer is 4
There are two sets. Jana and John-David and also Jerimiah and Jeddidiah
The Comedy of Errors is about two sets of identical twins. Twelfth Night is also about twins.
273 sets
2
Film Vodvil Three Sets of Twins - 1946 was released on: USA: 12 February 1946