In this quiz alphanumeric notation is used. The letter shown is the first letter of the city's name, and the number shown is how many letters long the city's name is.
So the answer to 'United Kingdom M10' would be Manchester – as the city begins with the letter M, and is 10 letters long.
With cities of multiple words, it is treated the same as single-word cities
Please comment below if you used a different, correct populated place to the answer