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The problem asks for the probability that a randomly selected student from the career fair is a senior.

### From the table, we have the following totals:
- The total number of students: 100
- The number of seniors: 71

### Probability Formula:
The probability of selecting a senior is calculated as:
\[
P(\text{Senior}) = \frac{\text{Number of Seniors}}{\text{Total Number of Students}} = \frac{71}{100}
\]

So, the probability that the student selected is a senior is:
\[
P(\text{Senior}) = \frac{71}{100}
\]

Would you like further details or any clarification? Here are 5 related questions for more practice:

1. What is the probability that a randomly selected student is a junior?
2. What is the probability that a student selected has "Sense of Giving to Society" as their primary career motivation?
3. What is the probability that a senior student has "Money" as their primary career motivation?
4. What is the combined probability of selecting a student who is a junior and has "Allowed to be Creative" as their motivation?
5. What is the probability of selecting a senior student who is motivated by "Money" or "Allowed to be Creative"?

**Tip:** Always verify whether the probability is independent or dependent on certain factors, especially when dealing with multiple categories!

If one of these students is selected at random, find the probability that the student selected is a senior.

Calculate the probability of selecting a senior student from a career fair attended by 100 upper-division students, categorized by primary career motivation. This problem involves basic probability and ratio concepts, ideal for students in Grades 10-12.

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