The order of the elements in a set doesnt contribute. Set A is not a subset of set B. A is a subset of B.
We use special notation to indicate whether or not an element belongs to a set as shown below.
A B 3791428 A B. X is a natural number x 10 If youre going to be technical you can use full set-builder notation to express the above mathematical set. Sets of Number Systems. The set of all positive numbers less than 10.