3()3()3()3=1填运算符号 加 减 乘 除 括号.
问题描述：
3()3()3()3=1填运算符号 加 减 乘 除 括号.
3()3()3()3=1
3()3()3()3=2
3()3()3()3=3
3()3()3()3=4
3()3()3()3=5
答
3*3/3/3=1
3/3+3/3=2
(3-3)*3+3=3
(3*3+3)/3=4
3-3/3+3=5