[aaaaaar]

Thank you for posting this - I took this quiz a few years ago in a team exercise and all of my answers were off. Since then I wanted to find a copy of this test, but didn't know where to look.

I think out of 15 people nobody got more than 1 or 2 right, except for my manager, who somehow got about 8 right. I'm curious how the HN crowd does on this - care to post your scores?

[miluoshi]

I got 6 right. For another 2 incorrect estimates an edge of my estimated range was very close to the correct answer. I think the key is not to try giving too narrow estimates and think in logarithmic scale. If it was possible I tried to decompose a problem to smaller pieces and calculate my estimate from information known to me (i.e. radius/circumference of the Earth for geographic questions) and make a range out of it by adding/taking couple of zeroes from my original estimate.