If w and c are integers, is w > 0?
(1) w + c > 50
(2) c > 48
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.
首先1或者2单独都不能得出w>0的结论
在1+2的情况下,即使c>48,也可能在w是负数的情况下w+c>50,这题推荐把数字带入式子验证