0 votes 0 votes If $q^{-a} = \frac{1}{r}$ and $r^{-b}=\frac{1}{s}$ and $s^{-c} = \frac{1}{q}$ ,the value of $abc$ is______. $(rqs)^{-1}$ $0$ $1$ $r+q+s$ Quantitative Aptitude gate2016-ec-1 numerical-ability algebra + – Milicevic3306 asked Mar 27, 2018 edited Mar 1, 2021 by Lakshman Bhaiya Milicevic3306 16.0k points 81 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.