Find n such that: 2/3+2/15+2/35+...+ 2/ nx(n+2)=322/323
2/3 + 2/15+ 2/35+...+2/n = 322/323 tim n
tìm n biết
2/3+2/15+2/35+..........+2/n=322/323
Dấu / là gạch phân số.
Tìm N biết
\(\frac{2}{3}+\frac{2}{15}+\frac{2}{35}+...+\frac{2}{N}=\frac{332}{323}\)
Find K such that: K-2006=1+(1+2+3)+ ...(1+...+2007) / 2017*1+2016*2+2015*3+...+2*2016+1*2017
Find the value of aa such that $\dfrac{2}{3}.
find the value of a such that 2/3<a/9<5/6
2/3 + 2/15 + 2/ 35+...+ 2/n=60/61 . Vay n=...
tìm số tự nhiên n biết : 2/3+2/15+2/35+2/63+...+2/n = 100/101