A group of twelve things is called a dozen.
The English word "dozen" is derived from the French "douzaine", meaning "a group of twelve things". Similar words exist in French for "quinzaine" (a group of 15), "vingtaine" (20) and "centaine" (100), though these do not have English equivalents.
Those things are called crayfish with 12 legs and a exoskeleton .
If, by "equal groups", you mean groups of equal things, you get how many in all [the total number] by simply addingthem all together. Sometimes adding is called summation.If, by "equal groups", you mean equal-sized groups of things, you get how many in all by multiplying the number of groups by the number of things in each member group.The number of things in a group is also called its cardinality. Loosely, cardinality is the size of the group, or the number of elements ["things"] in the group.
a group of 16 bits is called a "word"
Quintets, quintuplets
An assortment is a group of things which are different; a group of things which are the same is called a set.
They are called the Transition Metals.
its called a species or a kingdom
An assortment is a group of things which are different; a group of things which are the same is called a set.
Dozen.
A group of babies is called the same things that a group of humans are called. These names include a crowd, clan, family, community, gang, and tribe.
Diversity
taxonomy
A group of chicks is called a clutch, peep or chattering
A group of chemical elements that include Zinc, Cadmium, Mercury and Copernicium.
Elements in group 1 are called Alkali Metals, after that group 2 elements are called Alkali Earth Metals, group 3-12 elements are called Transition Elements.
A group of flowers may be called a bunch (a group of things growing close together); a cluster or clump. A bouquet is a group of flowers arranged for its beauty.