Question

添上适当的运算符号,使下面答案都是1.

Answer 1

(1+2)/3=1

1*2+3-4=1

[(1+2)/3+4]/5=1

(1*2+3-4+5)/6=1

{[(1+2)/3+4]/5+6}/7=1

[(1*2+3-4+5)/6+7]/8=1

[(1-2+3+4)*5-6-7-8]/9=1