C-04-Q020mediumsingle_mcq5753=?\dfrac{5^7}{5^3} = ?5357=?a5105^{10}510b545^454c5215^{21}521d54/35^{4/3}54/3ব্যাখ্যাSame base, so subtract the exponents: 5753=57−3=54\frac{5^7}{5^3} = 5^{7-3} = 5^45357=57−3=54.