OpenStax, Algebra and Trigonometry 2e §13.5 Counting Principles · Exercise 8 · Combinatorics · Permutations & combinations

Counting Principles · Exercise 8

Assume that there are $n$ ways an event $A$ can happen, $m$ ways an event $B$ can happen, and that $A and B$ are non-overlapping.

Use the Addition Principle of counting to explain how many ways event $A or B$ can occur.

~5 minWritten answer · check your work with Lemma

OpenStax, Algebra and Trigonometry 2e · §13.5 Counting Principles · Exercise 8

Stuck? A gentle nudge

No hints for this one.

Something off?

Workspace

Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.