1/2+1/6+1/12+1/20+......+1/4066272 isihlah titik tersebut dengan caranya

1/2 + 1/6 + 1/12 + 1/20 + ... + 1/(2016 × 2017)
= (1 - 1/2) + (1/2 - 1/3) + (1/3 - 1/4) + (1/4 - 1/5) + .... + (1/2016 - 1/2017)
= 1 - 1/2017
= 2017/2017 - 1/2017
= 2016/2017