Problem of the Week

A new problem every Monday that challenges participants of all ages to think creatively and apply their math skills. Perfect for a weekly mental challenge.

Three-Digit Puzzler

Posted: November 10, 2025

87 % of users got this correct

Your task is to look for three-digit numbers where the tens digit is three times the units (ones) digit and the hundreds digit is two less than the tens digit. Find the sum of all such three-digit numbers like this!

View Past Problems