Test your mathematical skills with the Problems of the Week from the Spring 2018 issue of Math Matters magazine!

We solved **Problems 1-4**.

Check your solution to **Problem 1.**

Check your solution to **Problem 2.**

Check your solution to **Problem 3.**

Check your solution to **Problem 4.**

You’ve been working on **Problem 5**.

**Problem 5.** An ellipse in the plane has foci at (20; 19) and (55; 59) and is tangent to the y-axis. What is the length of the major axis of the ellipse?

Check your solution to **Problem 5.**

Our mathematical challenge is done. We hope you had fun!

Published: November 5, 2018