Emily drew a diagram and applied the Pythagorean theorem: a^2 + b^2 = c^2. She plugged in the values: 6^2 + b^2 = 10^2. Solving for b, she got b = √(100 - 36) = √64 = 8 inches.

A company has 5 employees with salaries: $50,000, $60,000, $70,000, $80,000, and $90,000. What is the median salary?

The next question was a data analysis problem:

Finally, Emily encountered a permutation and combination question:

A committee of 3 people is to be formed from a group of 6 people. How many different committees are possible?