Practice problem
What is the union of {1,2,3,4,5,6,7,8,9}\{1,2,3,4,5,6,7,8,9\}{1,2,3,4,5,6,7,8,9} and {10,11,12,13,14,15,16}?\{10,11,12,13,14,15,16\}?{10,11,12,13,14,15,16}?
{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}\{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16\}{1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16}
{ }\{\text{ }\}{ } (the empty set)
1,2,3,4,5,6,7,8,910,11,12,13,14,15,161,2,3,4,5,6,7,8,9 10,11,12,13,14,15,161,2,3,4,5,6,7,8,910,11,12,13,14,15,16
Type a concept, like “slope” or “photosynthesis”.
