Question

C=1x2+2x3+3x4+........+99x100

D=1x2x3+2x3x4+3x4x5+.......+98x99x100

E=1²+2²+5²+.......+99²

F=1/1x2+1/2x3+..........+1/99x100

G=1/1x2x3+1/2x3x4+........+1/99x98x100

H= 1/1x2x3x4+1/3x4x5x6+............+1/97x98x99x100

K= 1+1/2(1+2)+1/3(1+2+3)+........+1/30(1+2+30)

L=1/2¹⁺1/2²⁺1/2³⁺1/2⁴+..............+1/2¹⁰

M=2015/2015x2017-2016²

\(\frac{ }{ }\)

Answer 1

sao nhiều vậy!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

F = 1- 1/2 + 1/2 - 1/3 + 1/3 - 1/4 + ... + 1/99 - 1/100

= 1 - 1/100

= 99/100

Answer 3

nhiều quá !!!