\(=\dfrac{2^{48}}{2^{100}}=\dfrac{1}{2^{52}}\)
\(\dfrac{2^{18}.2^{30}}{2^{24}.2^{76}}=\dfrac{2^{\left(18+30\right)}}{2^{\left(24+76\right)}}=\dfrac{2^{48}}{2^{100}}=\dfrac{2^{48}}{2^{48}}.\dfrac{1}{2^{52}}=1.\dfrac{1}{2^{52}}=\dfrac{1}{2^{52}}\)
Chúc bạn học tốt!