9 The operation* represents either addition, subtraction, or multiplication of integers, what is the value of 1*0? (1) 0*2=2 (2) 2*0=2
l Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient l Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient l BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. l EACH statement ALONE is sufficient Statements (1) and (2) TOGETHER are NOT sufficient 这道题答案是A ,可我觉得应该是E,2+ /-0=2,1+/-0=1呀. 请大家讨论 |