I am a three digit number the sum of my digits is 10. my first digit and my last digit are the same what number am i?

A 181
B 262
C 343
D 505

All of them are correct, according to the information you posted.

I don't understand the part of "one of my factors is 7" can you explain that to me Ms.Sue?

To find the answer to this question, we need to look for a three-digit number where the sum of its digits is 10, and the first and last digits are the same.

Let's break this down step by step:

Step 1: The sum of the digits is 10.
This means that when we add up all the digits of the number, the total should be 10.

Step 2: The first and last digits are the same.
Since the number is three digits, the first and last digits are at the beginning and end of the number.

Now, let's evaluate the given options:

Option A: 181
The sum of the digits in this number is 1 + 8 + 1 = 10. So, the sum of the digits is correct. Additionally, the first and last digits are the same, which is 1. Therefore, option A satisfies both conditions.

Option B: 262
The sum of the digits in this number is 2 + 6 + 2 = 10. So, the sum of the digits is correct. However, the first digit, which is 2, is not the same as the last digit, which is 2. Therefore, option B does not satisfy the conditions.

Option C: 343
The sum of the digits in this number is 3 + 4 + 3 = 10. So, the sum of the digits is correct. Additionally, the first and last digits are the same, which is 3. Therefore, option C satisfies both conditions.

Option D: 505
The sum of the digits in this number is 5 + 0 + 5 = 10. So, the sum of the digits is correct. However, the first digit, which is 5, is not the same as the last digit, which is 5. Therefore, option D does not satisfy the conditions.

After evaluating all the options, we can conclude that the number is:

Option C: 343

So, the correct answer is C - 343.