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Roman numbers:

[tex]\[
\begin{array}{ll}
11 \times 5 & XI \times V \\
12 \times 5 & XII \times V \\
13 \times 5 & XIII \times V \\
14 \times 5 & XIV \times V \\
15 \times 5 & XV \times V \\
16 \times 5 & XVI \times V \\
17 \times 5 & XVII \times V \\
18 \times 5 & XVIII \times V \\
19 \times 5 & XIX \times V \\
20 \times 5 & XX \times V \\
\end{array}
\][/tex]



Answer :

GinnyAnswer
Let's solve the problem step by step, interpreting the markings and the information provided.

We are working with Roman numerals for the numbers 11 through 20. Here is a detailed breakdown of each number along with their corresponding Roman numerals:

- 11 is "XI"
- 12 is "XII"
- 13 is "XIII"
- 14 is "XIV"
- 15 is "XV"
- 16 is "XVI"
- 17 is "XVII"
- 18 is "XVIII"
- 19 is "XIX"
- 20 is "XX"

The problem specifies markings for 11 and 20 specifically. Let's analyze these:

- For 11: The numeral is "XI" and there is an indication (×) next to it.
- For 20: The numeral is "XX" and there is a mark (××) next to it.

Given the interpretations:

- The number 11 has a multiplication sign (×) next to it, indicating it should be singled out or highlighted for some reason.
- Similarly, the number 20 has two multiplication signs (××) next to it.

Based on this:

For the numbers 11 and 20:
- 11 in Roman numeral is "XI", and it's marked as important (×).
- 20 in Roman numeral is "XX", and it's also marked as important (××).

The resulting output would be:

[tex]\[ \begin{aligned} &11 \rightarrow \text{XI} \, ( \text{Important}) \\ &20 \rightarrow \text{XX} \, ( \text{Important}) \\ \end{aligned} \][/tex]

Summarizing, the numbers 11 and 20 are specifically highlighted due to their respective importance marks. Their Roman numerals are "XI" for 11 and "XX" for 20.