Practice problem
What is the union of {1,2,3}\{1,2,3\}{1,2,3} and {3,4,5}\{3,4,5\}{3,4,5} in correct roster form?
333
{3}\{3\}{3}
{1,2,3,4,5}\{1,2,3,4,5\}{1,2,3,4,5}
{1,2,3,3,4,5}\{1,2,3,3,4,5\}{1,2,3,3,4,5}
Type a concept, like “slope” or “photosynthesis”.
