\begin{tabular}{|c|c|c|}
\hline Place & Is a city & Is in North America \\
\hline India & & \\
\hline Tokyo & [tex]$\checkmark$[/tex] & \\
\hline Houston & [tex]$\checkmark$[/tex] & [tex]$\checkmark$[/tex] \\
\hline Peru & & \\
\hline New York & [tex]$\checkmark$[/tex] & [tex]$\checkmark$[/tex] \\
\hline Tijuana & [tex]$\checkmark$[/tex] & [tex]$\checkmark$[/tex] \\
\hline Canada & & [tex]$\checkmark$[/tex] \\
\hline
\end{tabular}

Let event [tex]$A=$[/tex] The place is a city.
Let event [tex]$B=$[/tex] The place is in North America.

Which outcomes are in [tex]$A$[/tex] or [tex]$B$[/tex]?

A. [tex]$\{ \text{Houston, New York, Tijuana} \}$[/tex]
B. [tex]$\{ \text{Tokyo, Houston, New York, Tijuana} \}$[/tex]
C. [tex]$\{ \text{Houston, New York, Tijuana, Canada} \}$[/tex]
D. [tex]$\{ \text{Tokyo, Houston, New York, Tijuana, Canada} \}$[/tex]



Answer :

To solve this problem, let's determine which places satisfy either event \( A \) (the place is a city) or event \( B \) (the place is in North America).

We'll start by examining each place and categorizing it according to the given attributes. Here's a detailed step-by-step process:

1. India
- Is a city: No
- Is in North America: No
- It doesn't satisfy either event \( A \) or event \( B \).

2. Tokyo
- Is a city: Yes
- Is in North America: No
- It satisfies event \( A \).

3. Houston
- Is a city: Yes
- Is in North America: No
- It satisfies event \( A \).

4. Peru
- Is a city: No
- Is in North America: No
- It doesn't satisfy either event \( A \) or event \( B \).

5. New York
- Is a city: Yes
- Is in North America: Yes
- It satisfies both events \( A \) and \( B \).

6. Tijuana
- Is a city: Yes
- Is in North America: Yes
- It satisfies both events \( A \) and \( B \).

7. Canada
- Is a city: No
- Is in North America: Yes
- It satisfies event \( B \).

Let's list out the places that satisfy \( A \) or \( B \):

- Tokyo satisfies \( A \).
- Houston satisfies \( A \).
- New York satisfies both \( A \) and \( B \).
- Tijuana satisfies both \( A \) and \( B \).
- Canada satisfies \( B \).

Thus, the outcomes in \( A \) or \( B \) are:
- Tokyo
- Houston
- New York
- Tijuana
- Canada

Now we match this list with the provided choices:

A. \{Houston, New York, Tijuana\} \\
B. \{Tokyo, Houston, New York, Tijuana\} \\
C. \{Houston, New York, Tijuana, Canada\} \\
D. \{Tokyo, Houston, New York, Tijuana, Canada\}

The correct answer, which includes all the places that satisfy \( A \) or \( B \), is:

D. \{Tokyo, Houston, New York, Tijuana, Canada\}

Therefore, the correct choice is [tex]\( \boxed{4} \)[/tex].