Question

若a.b.c.d.e.f是六个有理数,并且a/b=1/2,b/c=-1/3c/d=1/4,d/e=-1/5,e/f=1/6,试求f/a的值

现在就回答`！

Answer 1

720

Answer 2

(a/b)(b/c)(c/d)(d/e)(e/f)=a/f=(1/2)(-1/3)(1/4)(-1/5)(1/6)=1/720
所以f/a=720

Answer 3

720
把前面几个数的倒数相乘即可。