题目中的(1-3/96-98)应该是(1-3/96*98),那么:(1-3/2*4)*(1-3/3*5)*(1-3/4*6)(1-3/5*7)```*(1-3/96*98)*(1-3/97*99)=(1*5/(2*4)) * (2*6/(3*5)) * (3*7/(4*6)) * (4*8/(5*7)) *...* (95*99/(96*98)) * (96*100/(97*99))=(1/4) * (100/97)=100/388