C-04-Q047mediumsingle_mcq1a−n=?\dfrac{1}{a^{-n}} = ?a−n1=?aana^nanb−an-a^n−ancব্যাখ্যাThe reciprocal of a−na^{-n}a−n flips the negative exponent to positive: 1a−n=an\dfrac{1}{a^{-n}} = a^{n}a−n.