The overall multiple pregnancy rate was 31.3% (24.7% twins, 5.8% triplets, and.08% quadruplets).
en.wikipedia.org Specifically, they looked at the different types of triplets and quadruplets of nodes, or subgraphs, in these smaller networks.
www.wired.com This is due to the fact that tamarins commonly give birth to twins and, to a lesser extent, triplets and quadruplets.
en.wikipedia.org Many sets of quadruplets contain a mixture of identical and fraternal siblings, such as three identical and one fraternal, two identical and two fraternal, or two pairs of identicals.
en.wikipedia.org It is also the sum of the first five square pyramidal numbers. 105 comes in the middle of the prime quadruplet (101, 103, 107, 109).
en.wikipedia.org