Question 1127959

A subset is either all of the elements of a set or just some of the elements. This is its mathematical symbol: ⊆.Because b and c are elements of set A, {b,c} ⊆ A.Because a, b and c are in set A, {a,b,c} ⊆ A. 
A proper subset is a subset that contains some, but not all, of the elements of the original set.

so, is
Q = {2,4,6}
the subsets of Q are:

{} | {2} | {4} | {6} | {2, 4} | {2, 6} | {4, 6} | {2, 4, 6} (total: 8)

R= {6,8} 
the proper subset of R

{} | {6} | {8}