\(A=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+...+\frac{1}{999.1000}\)
\(B=\frac{1}{501.1000}+\frac{1}{502.999}+...+\frac{1}{999.502}+\frac{1}{1000.501}\)
Tính\(\frac{A}{B}\)?
Mk cần gấp nhanh lên nhé!
Bài 1 :
Cho :
A = \(\frac{1}{51}\)+ \(\frac{1}{52}\)+ . . . + \(\frac{1}{100}\)
B = 1 - \(\frac{1}{2}\)+ \(\frac{1}{3}\)- \(\frac{1}{4}\)+ ... + \(\frac{1}{99}\)- \(\frac{1}{100}\)
C = \(\frac{1}{1.2}\)+ \(\frac{1}{3.4}\)+ \(\frac{1}{5.6}\)+ . . . + \(\frac{1}{99.100}\)
So sánh A với B với C
Bài 2 :
Cho :
A = \(\frac{1}{1.2}\)+\(\frac{1}{3.4}\)+ . . . + \(\frac{1}{999.1000}\)
B = \(\frac{1}{501.1000}\)+ \(\frac{1}{502.999}\)+ . . . +\(\frac{1}{999.502}\)+ \(\frac{1}{1000.501}\)
Tính \(\frac{A}{B}\)= ?
Bài 3 : Tính
a) A = \(\frac{3}{4}\).\(\frac{8}{9}\). \(\frac{15}{16}\). ... . \(\frac{9999}{10000}\)
b) B = \(\frac{8}{9}\). \(\frac{15}{16}\). \(\frac{24}{25}\). ... . \(\frac{3599}{3600}\)
Bài 4 :
Cho : A =\(\frac{1}{2}\).\(\frac{3}{4}\). \(\frac{5}{6}\). ... . \(\frac{9999}{10000}\)
B = \(\frac{1}{100}\)
So sánh A và B
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
Bài 1 :
Cho :
A = \(\frac{1}{51}\) + \(\frac{1}{52}\) + . . . + \(\frac{1}{100}\)
B = 1 - \(\frac{1}{2}\) + \(\frac{1}{3}\)- \(\frac{1}{4}\) + ... + \(\frac{1}{99}\)- \(\frac{1}{100}\)
C = \(\frac{1}{1.2}\) + \(\frac{1}{3.4}\) + \(\frac{1}{5.6}\)+ . . . + \(\frac{1}{99.100}\)
So sánh A với B với C
Bài 2 :
Cho :
A = \(\frac{1}{1.2}\) +\(\frac{1}{3.4}\) + . . . + \(\frac{1}{999.10000}\)
B = \(\frac{1}{501.1000}\) + \(\frac{1}{502.999}\) + . . . +\(\frac{1}{999.502}\) + \(\frac{1}{1000.501}\)
Tính \(\frac{A}{B}\) = ?
Bài 1 :
Cho :
A = \(\frac{1}{51}\) + \(\frac{1}{52}\) + . . . + \(\frac{1}{100}\)
B = 1 - \(\frac{1}{2}\) + \(\frac{1}{3}\)- \(\frac{1}{4}\) + ... + \(\frac{1}{99}\)- \(\frac{1}{100}\)
C = \(\frac{1}{1.2}\) + \(\frac{1}{3.4}\) + \(\frac{1}{5.6}\)+ . . . + \(\frac{1}{99.100}\)
So sánh A với B với C
Bài 2 :
Cho :
A = \(\frac{1}{1.2}\) +\(\frac{1}{3.4}\) + . . . + \(\frac{1}{999.10000}\)
B = \(\frac{1}{501.1000}\) + \(\frac{1}{502.999}\) + . . . +\(\frac{1}{999.502}\) + \(\frac{1}{1000.501}\)
Tính \(\frac{A}{B}\) = ?
1/1.2+1/2.3+1/3.4+......+1/999.1000
Tính: \(D=\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+......+\frac{1}{999.1000}\)
Tính: \(\frac{1}{1.2}+\frac{1}{3.4}+\frac{1}{5.6}+..........+\frac{1}{997.998}+\frac{1}{999.1000}\)
