C-04-Q051mediumsingle_mcq7−1=?7^{-1} = ?7−1=?a−7-7−7b17\dfrac{1}{7}71c−17-\dfrac{1}{7}−71d777ব্যাখ্যাA negative exponent of −1-1−1 gives the reciprocal of the base: 7−1=177^{-1} = \dfrac{1}{7}7−1=71.