Question : The infinite product $\prod_{n=2}^\infty(1-\frac{2}{n(n+1)})$ converges to what value ?
My attempt : I tried using partial fractions. The above product became
$\prod_{n=2}^\infty(1-\frac{2}{n} +\frac{2}{n+1})$
But it got more complicated.
I tried expanding terms
$\frac{2}{3}\times\frac{5}{6}\times\frac{9}{10}\times\frac{14}{15}...$
I can't find any pattern and simplify. I don't know how else to do. Kindly help me
HINT: $$1-\frac{2}{n(n+1)}=\frac{(n-1)(n+2)}{n(n+1)}$$Telescoping, anyone?