https://r2.erweima.ai/mathbot/image/1726252691188ssufzy3f.pdf

The document you uploaded appears to be a mathematics assessment for evaluating general competencies (PAES - Competencia Matemática 1). It includes a variety of multiple-choice math questions, with topics covering arithmetic, algebra, geometry, probability, and logic.

Here's a brief overview of the first few questions:

1. **Basic arithmetic**: Solve \( N = 43 - 32 - 21 + 10 \).  
   Options:  
   A) 51  
   B) 52  
   C) 53  
   D) 54

2. **Mountain bike competition**: Analyze the scores of three participants and determine a logical conclusion about their performance.  
   Options include evaluating if someone had a negative score or their ranking.

3. **Prime number puzzle**: Identify which prime number \( x \) fits in a table where the product of numbers in each row or column equals a specified value.

4. **Fraction and arithmetic operations**: Calculate the result of \( -4 - \frac{5}{3} \).  
   Options include fractional answers.

5. **Queue minimization**: A problem about finding the shortest wait time for a passenger at an airport, given the number of people in line and processing times per person.

Would you like to dive into solving any specific question from this document or explore detailed explanations for these or any others?

### Related Questions:
1. How can you approach solving prime number puzzles with multiplication constraints?
2. What strategies can be applied to efficiently evaluate arithmetic expressions?
3. How can probability theory be applied in choosing the shortest queue?
4. What are the key steps in solving systems of linear equations?
5. How can geometric reasoning help in solving problems involving shapes and areas?

### Tip:
For multiple-choice tests, quickly eliminate options that are clearly incorrect to narrow down your choices before solving the problem fully.

This problem involves basic arithmetic operations including subtraction and addition. The steps show how to solve N = 43 – 32 – 21 + 10 and identify the correct solution from multiple-choice options. Ideal for middle school students.

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