Questions: Cho hai tập hợp (X) và (Y) : [ X=1 ; 6 ; 2 ; 3 ; 14 Y=2 ; 9 ; 13 ; 1 text Tìm X cup Y ] Hãy chọn 1 đáp án: (A) (3,6,9,13) (B) (1,2,3,6,9,13,14) (C) (1,2) (D) (3,6,14)

Transcript text: Cho hai tập hợp $X$ và $Y$ : \[ \begin{array}{l} X=\{1 ; 6 ; 2 ; 3 ; 14\} \\ Y=\{2 ; 9 ; 13 ; 1\} \\ \text { Tim } X \cup Y \end{array} \] Hây chọn 1 đáp án: (A) $\{3,6,9,13\}$ (B) $\{1,2,3,6,9,13,14\}$ (C) $\{1,2\}$ (D) $\{3,6,14\}$

Solution

Solution Steps

To find the union of two sets $X$ and $Y$, we combine all the unique elements from both sets. The union of sets $X$ and $Y$ will include every element that is in $X$, in $Y$, or in both.

Step 1: Define the Sets

We have two sets defined as follows: \[ X = \{1, 6, 2, 3, 14\} \] \[ Y = \{2, 9, 13, 1\} \]

Step 2: Calculate the Union

To find the union of sets $X$ and $Y$, we combine all unique elements from both sets. The union is represented as: \[ X \cup Y = \{1, 2, 3, 6, 9, 13, 14\} \]

Step 3: Present the Result

The resulting set from the union of $X$ and $Y$ is: \[ \{1, 2, 3, 6, 9, 13, 14\} \]