Các câu hỏi tương tự
Tính nhanh:
\(\frac{1}{2.4}+\frac{1}{4.6}+\frac{1}{6.8}+...+\frac{1}{98.100}\)
\(\dfrac{1}{2.4}+\dfrac{1}{4.6}+\dfrac{1}{6.8}+...+\dfrac{1}{96.98}+\dfrac{1}{98.100}\)
1/2.4 + 1/4.6 + 1/6.8 + ... + 1/98.100
có bn nào lm giùm mik vs
Cho M = 5/2.4 + 5/4.6 + 5/6.8 + ... + 5/ 96.98 + 5/98.100 . Tìm x.M-1=20/29
2.4+4.6+6.8+...+98.100/1.2+2.3+3.4+...+49.50. Tính
tính nhanh
\(Q=\frac{5}{2.4}+\frac{5}{4.6}+\frac{5}{6.8}+...+\frac{5}{98.100}\)
tính 2.4+3.5+4.6+5.7+6.8+7.9+8.10+...+97.99+98.100
Tính :
A = \(\frac{-1}{2.4}\)+ \(\frac{-1}{4.6}\)+\(\frac{-1}{6.8}\)+ ..... + \(\frac{-1}{98.100}\)
2/2.4+2/4.6+2/6.8+...+2/98.100