Các câu hỏi tương tự
Tính S =1/14+1/35+1/65+...+1/350
a) Tính hợp lí các tổng sau:
S1: 1/14+1/35+1/65+.....+1/350
S2: 1/3+1/32+1/33+1/34+.....+1/3300
S3:1/1x3x5+1/3x5x7+1/5x7x9+....+1/25x27x29
S4:1+1/2+1/4+1/8+....+1/1024
b) Tìm x biết
(1/1x101+1/2x102+....+1/10x110)x=1/1x11+1/2x12+...+1/100x110
E=1/2+1/14+1/35+1/65+...+1/527
E=1/2+1/14+1/35+1/65+...+1/527
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
a=1/2+1/14+1/35+1/65+1/104+1/152
tìm S= 1/2 +1/14 + 1/35+ 1/ 65+ 1/104+ 1/152