gwd6-Q26: K is a set of integers such that if the integer r is in K, then r + 1 is also in K. Is 100 in K? (1) 50 is in K. (2) 150 is in K.
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient. C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. D. EACH statement ALONE is sufficient. E. Statements (1) and (2) TOGETHER are NOT sufficient
答案选的是A 我觉得是D 请教下大家为什么(2)150 is in K. is not sufficient