📘 set theory

1. **Problem statement:** Find the number of people who like only one item (either Mobile or Computer) from the survey data. 2. **Given data:**

1. **بيان المشكلة:** لدينا مجموعتان: س = {4, 6, 8, 10} وص = {2, 3, 4, 5, 0}، وعلاقة ع من س إلى ص حيث ع(س) = 2س لكل س في س.

1. **Stating the problem:** We have three tests: Written (W), Practical (P), and Oral (O).

1. **Stating the problem:** We have three tests: Written (W), Practical (P), and Oral (O).

1. List the elements in $\alpha$, $B$, and $U$: - $\alpha = \{1, 9\}$

1. **Problem:** If $A \subseteq B$, prove that $C - B \subseteq C - A$. 2. **Formula and rules:**

1. **State the problem:** We are given sets $U = \{1, 2, 3, 4, 5, 6, 7, 8\}$, $A = \{2, 4, 6, 8\}$, and $B = \{1, 2, 3, 5, 7\}$. We need to find which option equals $A' \cup B$, wh

1. **Problem:** Write the set $V = \{a,e,i,o,u\}$ in set builder form. 2. **Formula and Explanation:** Set builder notation describes a set by a property that its members satisfy.

1. **State the problem:** We have a survey with three professions: Business, Government Jobs, and Farming. Given counts for each category and overlaps, we need to find the number o

1. **Problem statement:** Given universal set $U=(-\infty,+\infty)$, $M=(-2,7]$, and $K=[0,13]$, find: 2. **Formulas and rules:**

1. **Problem:** Find the union $X \cup Y$ where $X = (-7, 13)$ and $Y = (2, 10]$. 2. **Formula and rules:** The union of two sets $A$ and $B$, denoted $A \cup B$, is the set of all

1. Let's start by stating the problem: Introduction to set theory, subsets, and set operations. 2. Set theory studies collections of objects called sets. A subset is a set where ev

1. **Problem statement:** In a competition, medals were awarded in three categories: dramatics (25 medals), music (17 medals), and dance (22 medals). There are 50 persons in total

1. **State the problem:** We need to verify if the given data about students' learning mode preferences is consistent. 2. **Given data:**

1. The problem involves understanding and verifying set operations given the sets A and B. 2. The union of sets A and B, denoted $A \cup B$, includes all elements that are in A, or

1. **Problem statement:** Given sets $A = \{a, b, c\}$, $B = \{c, d, e\}$, and universal set $U = \{a, b, c, d, e, f, g\}$, find the following sets: 2. **Union $A \cup B$:** The un

1. **State the problem:** We have 240 students total. Among them, 176 are on the honor roll (set $H$), 48 are members of the varsity team (set $V$), and 36 are in both groups (set

1. The problem is to understand the expression $x \cap (y \cup z)$, which involves set operations: intersection ($\cap$) and union ($\cup$). 2. The union of two sets $y$ and $z$ is

1. The problem asks to draw Venn diagrams for various set operations involving sets A, B, and C. 2. We will interpret each expression and describe the region it represents in the V

1. **State the problem:** We have a universal set $U = \{1, 2, \ldots, 20\}$, and three subsets: - $X = \{4, 5, 6, 7, 8\}$

1. **State the problem:** We have the set of natural numbers $N$ and the set $A = \{1, 2, \{3\}\}$. We want to determine which of the following statements is true: - $\{3\} \subset