One hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one Hun? (1/100-1)*(1/99-1)*(1/98-1).(1/2-1)=? The problem is to multiply up to half

One hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one hundredth minus one Hun? (1/100-1)*(1/99-1)*(1/98-1).(1/2-1)=? The problem is to multiply up to half

The original formula = (1-1 / 100) (1 - / 99) (1-1 / 98) (1-1/2)
=-(99/100)(98/99)(97/98)…… (2/3)(1/2)
=-1/100