Practice problem
Select all of the following that are subsets of the set Q\mathbb{Q}Q of rational numbers.
Z\mathbb{Z}Z, the set of integers
R\mathbb{R}R, the set of real numbers
N\mathbb{N}N, the set of positive integers
{π}\{\pi\}{π}
{2}\{\sqrt{2}\}{2}
{1,2,3,1.5,7.5,2.5}\{1,2,3,1.5,7.5,2.5\}{1,2,3,1.5,7.5,2.5}
Type a concept, like “slope” or “photosynthesis”.