Problems to solve and send in your solution
From time to time, I will publish a few mathematics problems for you to solve and send in the solutions. After a while I will publish the key to those problems.
Please scroll down to the end of the page to get the 5th set of math problems, published on 25 May, 2017. When you are ready, take a picture of your writing and send it to the following e-mail address: firstname.lastname@example.org. Read the email address carefully!