12. Advanced Counting (SLASH) Generating Functions Overview
More Combinatorial Techniques — Quiz
Test your understanding of more combinatorial techniques with 5 practice questions.
Practice Questions
Question 1
A bookstore sells $3$ kinds of notebooks and $4$ kinds of pens. If a student chooses one notebook and one pen, how many different pairs are possible?
Question 2
How many $2$-element subsets can be chosen from the set $\{a,b,c,d\}$?
Question 3
What is the smallest number of people needed to guarantee that at least two people share a birth month?
Question 4
How many binary strings of length $4$ contain at least one $1$?
Question 5
How many integers from $1$ to $30$ are divisible by $2$ or by $5$?