(In reply to re: Is this valid? no ! - partial spoiler
by Ady TZIDON)
I was surprised the answer was 2 myself since it's the same as the 2^-n series, but I looked it up.
However they switch term-wise with the triangular numbers reciprocals first smaller then larger than the geometric.
I know that re-grouping terms doesn't always work as
but since I got the correct answer I want to know if I was somehow "cheating."
Posted by Jer
on 2015-02-20 21:19:34