Bringingthewood
The rule in this case is that there are no numbers in any position.
There are 900 three digit numbers. (99 - 1000) (# of possible numbers in the first position = 9) (# of possible numbers in the second position = 10) (# of possible numbers in the third position = 10) 9 *10 *10 = 900
Numbers that indicate a position in a group are called ordinal numbers. They express a rank or order, such as first, second, or third. Ordinal numbers are used to denote the relative position of items in a sequence rather than their quantity.
There are no "position #'s" for the coils, the position numbers are for your cylinders, the coils can be interchangable, one fits all. Hope that helps.
On a 2-D graph, a pair of numbers are used to determine the position of the point on a graph.
coordinates
Alignment.
Ordinal numbers,like "first" or "thirty-third"
There are 10000 such codes. Each of the numbers 0-9 can be in the first position. With each such first digit, each of the numbers 0-9 can be in the second position. With each such pair of the first two digits, each of the numbers 0-9 can be in the third position. etc.
They're plate-position numbers. Bills are printed in groups (usually 32) and the numbers tell which position the particular bill occupied in the grid.
They are usually position numbers. You use these to help locate connections.
coordinate