Question
These problems involve combinations. Choosing Exam Questions A student must answer seven of the ten questions on an exam. In how many ways can she choose the seven questions?
Step 1
This is a combination problem, which can be solved using the combination formula: \[C(n, k) = \frac{n!}{k!(n-k)!}\] where \(n\) is the total number of items, \(k\) is the number of items to choose, and "!" denotes factorial. Show more…
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