2/3+ 2/6+ 2/12+ 2/24+ 2/48+ 2/192= 2/3+ 1/3+ 1/6+1/12+1/24+1/96
=64/96+32/96+16/96+8/96+4/96+1/96
=125/96
2/3+ 2/6+ 2/12+ 2/24+ 2/48+ 2/192= 2/3+ 1/3+ 1/6+1/12+1/24+1/96
=64/96+32/96+16/96+8/96+4/96+1/96
=125/96
\(\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
\(C=\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
\(C=\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
Tính nhanh \(\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
\(\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\) bài này là bài tính nhanh nhé các bạn giải giùm minh để mình còn thi
Câu 1: Tính nhanh hợp lí \(\frac{119x83-183}{120x83x-266}\)
Câu 2: Tính nhanh hợp lí: \(\frac{2}{3}+\frac{2}{6}+\frac{2}{12}+\frac{2}{24}+\frac{2}{48}+\frac{2}{96}+\frac{2}{192}\)
Tính nhanh:
a) 2+5+8+11+...+104+107.
b) \(\frac{1}{3}+\frac{1}{6}+\frac{1}{12}+\frac{1}{24}+\frac{1}{48}+\frac{1}{96}+\frac{1}{192}\)
tính nhanh hộ mình câu này với : (có kèm bài làm nha )
\(\frac{3}{2}+\frac{ 3}{8}+\frac{3}{32}+\frac{3}{128}+\frac{3}{512}\)
\(5+\frac{5}{3}+\frac{5}{9}+\frac{5}{27}+\frac{5}{81}\)
\(\frac{4}{3}+\frac{1}{3}+\frac{1}{12}+\frac{1}{48}+\frac{1}{192}\)
tính nhanh:
B=\(\frac{3+33+333+3333+33333}{4+44+444+4444+44444}\)
A=\(\frac{1}{3}+\frac{1}{6}+\frac{1}{12}+\frac{1}{24}+\frac{1}{48}+\frac{1}{96}+\frac{1}{192}\)
\(\frac{1995}{1997}.\frac{1990}{1993}.\frac{1997}{1994}.\frac{1993}{1995}.\frac{997}{995}\)