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Given:
Set
A=7,9,11
Set
B=3,7,8
What is
A uu B ?

{7}

{3,7,8,9}

{3,7,8,9,11}

{9,11}

Given: $\newline$ Set $A=7,9,11$ $\newline$ Set $B=3,7,8$ $\newline$ What is $A \cup B$ ? $\newline$ $\{7\}$ $\newline$ $\{3,7,8,9\}$ $\newline$ $\{3,7,8,9,11\}$ $\newline$ $\{9,11\}$

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Convert between repeating decimals and fractions

Full solution

Q. Given:

\newline

Set

A=7,9,11

\newline

Set

B=3,7,8

\newline

What is

A \cup B

?

\newline

\{7\}

\newline

\{3,7,8,9\}

\newline

\{3,7,8,9,11\}

\newline

\{9,11\}

List Elements Set A and B: First, list all the elements in Set A and Set B without repeating any numbers. $\newline$ $A = \{7, 9, 11\}$ $\newline$ $B = \{3, 7, 8\}$
Combine Unique Elements: Now, combine all the unique elements from both sets to form the union. $A \cup B = \{3, 7, 8, 9, 11\}$
Check for Repeats: Check to make sure no numbers are repeated and all numbers from both sets are included. $\newline$ Looks good, no repeats and all numbers from $A$ and $B$ are there.

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