Các câu hỏi tương tự
A = 1/1.2 +1/3.4+ ...1/999.1000
B=1/501.1000 + 1/502.999+... + 1/999.502 + 1/1000.501
tính A/B
\(A=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+...+\frac{1}{999.1000}\)
\(B=\frac{1}{501.1000}+\frac{1}{502.999}+...+\frac{1}{999.502}+\frac{1}{1000.501}\)
Tính\(\frac{A}{B}\)?
Mk cần gấp nhanh lên nhé!
Tính: \(D=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+......+\frac{1}{999.1000}\)
Tính: \(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+..........+\frac{1}{997.998}+\frac{1}{999.1000}\)
Tính: \(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+.......+\frac{1}{997.998}+\frac{1}{999.1000}\)
Tính: \(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+.....+\frac{1}{997.998}+\frac{1}{999.1000}\)
1/1.2+1/2.3+1/3.4+......+1/999.1000
Tính:
a) A dfrac{1}{1.2} + dfrac{1}{2.3} + dfrac{1}{3.4} +...+ dfrac{1}{998.999} + dfrac{1}{999.1000}
b) B dfrac{1}{1.6} + dfrac{1}{6.11} + dfrac{1}{11.16} +...+ dfrac{1}{495.500}
c) C dfrac{1}{1.2.3} + dfrac{1}{2.3.4} + dfrac{1}{3.4.5} +...+ dfrac{1}{998.999.1000}
(Mong mn giúp ạ)
Đọc tiếp
Tính:
a) A = \(\dfrac{1}{1.2}\) + \(\dfrac{1}{2.3}\) + \(\dfrac{1}{3.4}\) +...+ \(\dfrac{1}{998.999}\) + \(\dfrac{1}{999.1000}\)
b) B = \(\dfrac{1}{1.6}\) + \(\dfrac{1}{6.11}\) + \(\dfrac{1}{11.16}\) +...+ \(\dfrac{1}{495.500}\)
c) C = \(\dfrac{1}{1.2.3}\) + \(\dfrac{1}{2.3.4}\) + \(\dfrac{1}{3.4.5}\) +...+ \(\dfrac{1}{998.999.1000}\)
(Mong mn giúp ạ)
tính
a, 1/1.2+1/2.3+1/3.4+....+1/999.1000
b, B= 1/2.4+1/4.6+1/6.8+1/8.10
A=1/1.2+1/3.4+1/5.6+...+1/49.50. Chứng minh A<1