The common number is called the dimension of the variety X.
Most also have only a small set of vowels, five being a common number.
The most common number of inputs are 1, 2, 4, 8, 16 and 32.
Other than four, the most common number of parts are three, five, six, and eight.
You match that list up with the most to least common numbers in the code.
These are all fairly common numbers to learn when you're searching for a new or used vehicle.
The facility code is a unique number common to all of the cards in a particular set.
The numbers add up to 108, another common number in the series.
The most common number of districts discussed for the city is 10.
The most common numbers being 2 bowls with 3 or 5 beans.