Các câu hỏi tương tự
E=1/2+1/14+1/35+1/65+...+1/527
E=1/2+1/14+1/35+1/65+...+1/527
1. Tìm x : 1/2 + 1/14 + 1/35 +....+ 1/x(x+3):2 = 9/14
Mong các bạn giúp mình !
a/ 1/2 + 5/6 + 11/12 + 19/20
b/ 1/2 + 5/6 + 11/12 + 19/20 + 29/30 + 41/42
c/ (1-1/3) + (1-1/15) + (1-1/35) + (1-1/63)
d/ 1/2 + 5/6 + 11/12 + ... + 9899/9900
e/ 2/3 + 14/15 + 34/35 +62/63
f/ 2/3 + 14/15 + 34/35 + ... + 9998/9999
D=1/2+1/14+1/35+.......+1/152
1/2+1/14+1/35+1/65+1/104+1/152 = ?
1/2+1/14+1/35+1/65+1/104+1/152
1/2+1/14+1/35+1/65+1/104+1/152
|0,75x - 1/5| + 4/7= 1 và 4/7
1/2+1/14+1/35+...+1/x(x+3:2=9/14