I read this in Futility Closet. This is the blog of this week (#BOTW#). Before giving the proof for -1 being a positive number, let me say something about this blog. I stumbled upon it long back. This is not a to-be-followed-seriously blog, but a blog to give life to tired grey cells. A huge collection of anectodes, puzzles, humour, history, science and math.
A very SFW (Safe for Work) blog that gives a good break to your taxing office routine. The collection is wonderful indeed.
What FC says about Itself
No matter how much you love your job, you can’t work for 10 hours straight.
That’s why there’s Futility Closet — 3,000 anecdotes, epigrams, illusions and wonders; puzzles, prodigies, sublimities and horrors.
Read a few and get back to work. We’ll keep finding more.
– Greg Ross, proprietor
Now for the proof.
Let X = 1+2+4+8+16+32+…. (an infinite series) Read the rest of this entry »
