We invite you to solve the English version of the RTSdécouverte monthly problem:

**Calculation of the year**

Consider the number 10^{2019} – 2019 What is the sum of its digits?

From Calendrier mathématique 2019 – Le monde de l’aléatoire, Presses Universitaires de Grenoble, 2019

Original RTS Problèmes du mois (FR)