What two words describe the result set of a FULL OUTER JOIN minus the INNER JOIN result set in set theory parlance

Idon’t understand this.. will someone ? will mark brainliest along with 20 points.

Alake near the arctic circle is covered by a 222-meter-thick sheet of ice during the cold winter months. when spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. after 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. let s(t)s(t)s, left parenthesis, t, right parenthesis denote the ice sheet's thickness sss (measured in meters) as a function of time ttt (measured in weeks).

Henry is an avid reader, he devours 90 pages in half an hour how many pages has henry read per minute?