# How do you make card packs?

## How do you make card packs?

10:39Suggested clip 67 secondsHow to make Trading Card Packs by Hand – YouTubeYouTubeStart of suggested clipEnd of suggested clip

### What are the symbols of sets?

SymbolMeaningExample{ }Set: a collection of elements{1, 2, 3, 4}A ∪ BUnion: in A or B (or both)C ∪ D = {1, 2, 3, 4, 5}A ∩ BIntersection: in both A and BC ∩ D = {3, 4}A ⊆ BSubset: every element of A is in B.{3, 4, 5} ⊆ D30

#### What is a ∆ B?

The symmetric difference of two sets A and B is the set (A – B) ∪ (B – A) and is denoted by A △ B. A △ B is the set of all those elements which belongs either to A or to B but not to both. A △ B is also expressed by (A ∪ B) – (B ∩ A).

**What does ∩ mean?**

In mathematics, the intersection of two sets A and B, denoted by A ∩ B, is the set containing all elements of A that also belong to B (or equivalently, all elements of B that also belong to A).

**What is ∈ called?**

The symbol ∈ indicates set membership and means “is an element of” so that the statement x∈A means that x is an element of the set A. In other words, x is one of the objects in the collection of (possibly many) objects in the set A.

## Is a part of symbol?

The symbol ∈ means is. So a ∈ b is read as a is a b; … The symbol itself is a stylized lowercase Greek letter epsilon (“ϵ”), the first letter of the word ἐστί, which means “is”.

### What does ø mean in math?

Slashed zero