Các câu hỏi tương tự
tinh F = 2x4+4x6+6x8+....+100x102
S=2x4+4x6+6x8+...+98x100+100x102
A=2x4+4x6+6x8+....+98x100
K=4/2x4+4/4x6+4/6x8+...+4/2008x2010
F=1/18+1/54+1/108+...+1/990
Tính nhanh E= 2x4+4x6+6x8+...+98x100
4/ 2x4 +4/4x6+4/6x8+.......+4/2008x2010
5/2x4+5/4x6+5/6x8+.....+5/48x60
4/2x4 + 4/4x6 + 4/6x8 + .... + 4/2014x 2016
2x4+4x8+8x12+12x16+16x20
1x2+2x4+4x6+6x8+8x10
tính nhanh