Question

`(1)/(2) +(1)/(6) +(1)/(12) +(1)/(20) +(1)/(30)+(1)/(42)+(1)/(56)+(1)/(72)`

Answer 1

answer is 8/9 !! hope that helps

Answer 2

Hello!

1/2 + 1/6 + 1/12 + 1/20 + 1/30 + 1/42 + 1/56 + 1/72

= 30/60 + 10/60 + 5/60 + 3/60 + 2/60 + 1/42 + 1/56 + 1/72

= 50/60 + 1/42 + 1/56 + 1/72

= 5/6 + 1/42 + 1/56 + 1/72

= 140/168 + 4/168 + 3/168 + 1/72

= 147/168 + 1/72

= 7/8 + 1/72

= 63/72 + 1/72

= 64/72

= 8/9