GRE

简答题(99—98—97—96—95)-(100—99—98—97—96)=

参考答案:暂无进入在线模考
D.
Each set of parentheses contains a-98,-97,and-96.These all cancel out when tlle two sets of numbers are subtracted;thus the expression simplifies to(99—95)-(100—99)=4—1=3.