新运算a★b=a-b+1,计算(2★3)★2的值是多少,0 B.-1 C.-2 D.1
问题描述:
新运算a★b=a-b+1,计算(2★3)★2的值是多少,0 B.-1 C.-2 D.1
答
答案B (2★3)★2=(2★3)-2+1=2-3+1-1=-1
新运算a★b=a-b+1,计算(2★3)★2的值是多少,0 B.-1 C.-2 D.1
答案B (2★3)★2=(2★3)-2+1=2-3+1-1=-1