11x12x13x14=24024
ai k cho mk thì mk k lại cho kích mau ko hết nha
11 x 12 x 13 x 14 = 24024
k rùi đó
\(\frac{18\times14+12\times13}{8\times15-20-28+96}\)
\(\frac{37\times13-13}{24+37\times12}=?\)
\(\frac{4}{3\times7}+\frac{5}{7\times12}+\frac{1}{12\times13}+\frac{7}{13\times20}+\frac{3}{20\times23}\)
\(x-\left(\frac{20}{11\times13}+\frac{20}{13\times15}+\frac{20}{15\times17}+...+\frac{20}{53\times55}\right)=\frac{3}{11}\)
\(\frac{3}{5\times8}+\frac{3}{8\times11}+\frac{3}{11\times14}+.........+\frac{3}{605\times608}+\frac{3}{608\times611}\)
\(\frac{3}{5\times8}+\frac{3}{8\times11}+\frac{3}{11\times14}+...+\frac{3}{605\times608}+\frac{3}{608\times611}\)
\(\frac{4}{1\times3}+\frac{4}{3\times5}+\frac{4}{5\times7}+...+\frac{4}{11\times13}=?\)
rút gọn:
\(\frac{5^2\times6^{11}\times16^2+6^2\times12^6\times15^2}{2\times6^{12}\times10^4-81^2\times960^3}\)
Tìm x biết :
\(\frac{1}{5\times8}+\frac{1}{8\times11}+\frac{1}{11\times14}+.....+\frac{1}{x\times\left(x+3\right)}=\frac{101}{1540}\)
