A = 1/30 + 1/42 + 1/56 + 1/72 +...+ 1/210 =?
tính nhanh: A=1/30+1/42+1/56+1/72+...+1/210
tính nhanh :
A = 1/30 + 1/42 + 1/56 + 1/72 + ... + 1/210
1/30+1/42+1/56+1/72+....+1/210
Tính Nhanh
A = 1/30+1/42+1/56+1/72+...+1/210
Tính :
\(A=\frac{1}{30}+\frac{1}{42}+\frac{1}{56}+\frac{1}{72}+...+\frac{1}{210}\)
A=\(\frac{1}{30}+\frac{1}{42}+\frac{1}{56}+\frac{1}{72}+....+\frac{1}{210}\)
Tính nhanh :
A=1/30 + 1/42 + 1/56 + 1/72 + ... + 1/210
B=2/2.3 + 2/3.4 + 2/4.5 + ... + 2/99.100
Tính Nhanh
A=\(\frac{1}{30}+\frac{1}{42}+\frac{1}{56}+\frac{1}{72}+...+\frac{1}{210}\)
Giúp mik nha
