SOLUTION: I need help with notations. I don't understand which signs mean what. I have a question that says: Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8} Which notati

Question 856532: I need help with notations. I don't understand which signs mean what. I have a question that says:
Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8}
Which notation shows the relationship between set C and set D?
I don't know how to answer this because I don't understand the meanings of the notations and I can't find them in my lesson. The signs are:
U,Ո, and a sideways U with a line under it (looks kind of like an underlined c).
Can you please explain what each sign means?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Let set C = {1, 2, 3, 4, 5, 6, 7, 8} and set D = {2, 4, 6, 8}
Which notation shows the relationship between set C and set D?
----
Since every element of D is an element of C,
D is a subset of C. Use the symbol that looks like <.
U is the union of sets; it is the set that contains all the elements
of both sets that are being united.
The upside-down U is the intersection; it is the set of all the
elements that are common to the sets involved.
The sideways U with the line over it is used because a
every set is a subset of itself; the symbol equates to <=
If there is no line over the sideways U, the subset is called
a proper subset.
==================
Google will tell you more about set notation.
========================
Cheers,
Stan H.

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