OpenStax, Algebra and Trigonometry 2e §13.5 Counting Principles · Exercise 39 · Combinatorics · Permutations & combinations
Counting Principles · Exercise 39
Find the distinct number of arrangements.
The letters in the word “academia” that begin and end in “a”
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Algebra and Trigonometry 2e · §13.5 Counting Principles · Exercise 39
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.