If the set S consists of five consecutive positive integers, what is the sum of these five integers?
(1) The integer 11 is in S, but 10 is not in S.
(2) The sum of the even integers in S is 26.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
2-> {11,12,13,14,15} 不可能是{12, 13, 14, 15, 16} ,只能有两个偶数
(2) -> S = {11, 12, 13, 14,15}