Các câu hỏi tương tự
A=15/90.94+15/94.98+15/98.102+....+15/146.150
B=10/56+10/140+10/260+...+10/1400
C=1/25.27+1/27.29+1/29.31+.....+1/73.75
Tính các tổng sau :
a) F = 1/25.27 + 1/27.29 + 1/29.31 + ... + 1/73.75
b) G = 15/90.94 + 15/94.98 + 15/98.102 + ... + 15/146.150
c) H = 10/56 + 10/140 + 10/260 + ... + 10/1400
bài 1
a,F=1/25.27 +1/27.29 +.....+1/73.75
b,G=15/90.94 +15/94.98 +.....+15/146.150
c,H=10/56+10/140 +10/260+....+10/1400
Tính nhanh
a, 15/90.94 + 15/94.98 + 15/98.102 + ....... + 15/146.150
b, 10/56 + 10/140 + 10/260 + ...... + 10/1400
\(E=\frac{1}{25.27}+\frac{1}{27.29}+...+\frac{1}{73.75}.\)
\(F=\frac{15}{90.94}+\frac{15}{94.98}+...+\frac{15}{146.150}\)
\(G=\frac{10}{56}+\frac{10}{140}+\frac{10}{260}+...+\frac{10}{1400}\)
Bài 2
\(\frac{1}{2^2}+\frac{1}{3^2}+...+\frac{1}{100^2}.\)
CMR A<\(\frac{3}{4}\)
Tính nhanh
a, F= 15/90.94 + 15/94.98 + 15/89.102+........+15/146.150
b, G= 10/56 + 10/140 + 10/260 + ........ + 10/1400
1) Tính bằng cách hợp lí (Tính nhanh)
a) \(A=\frac{15}{90.94}+\frac{15}{94.98}+\frac{15}{98+102}+........+\frac{15}{146.150}\)
b) \(B=\frac{10}{56}+\frac{10}{140}+\frac{10}{260}+............+\frac{10}{1400}\)
Bạn nào làm được giúp mik, mik tick cko nha
A=7/10.11+7/11.12+7/12.13+...+7/69.70. B=6/15.18+6/18.21+...+6/87.90
C=15/90.94+15/94.98+...+15/146.150. D=10/56+10/140+10/260+...+10/140
Tính tổng
A= 1/25x27 +1/27x29 +.............+1/73x75
B=15/ 90x94 + 15/94x98 +...............+15/146x150
C=10/56 + 10/140 + 10/260 +.................+10/1400
*** Bạn nào nhanh nhất mình Tick cho nha