Professor Puzzle Lost & Found: Roman Numeral Puzzle

Description

Can you make every row add up to 26?

Roman numerals originated in ancient Rome, in the 8th and 9th century, and remained the usual way of writing numbers throughout Europe well into the late Middle Ages. They comprise of seven different symbols, each with a fixed integer value. See if you can place the numeral pegs in the right order to solve this intricate challenge.