"A 7 digit number consists of 7 distinct digits (from 0..9 ofcourse); The product of the first 3 digits = product of central 3 digits = product of last 3 digits; Find the middle digit."
"Middle Number: 2" "Set: 1892463" "Common Products: 72"
The next question I did not understand; I just figured I was not smart enough because I have no college and I am just a hacker that makes shit not a "software eng.". I sent it to a friend of mine that teaches Econ. at a top college and he said he had no idea what they were even asking. (see question below)
Given a list of N line segments on the X axis: (x1[i], x2[i]) where i = 1 to N; And then a list of M queries. Each query inputs one x-coordinate and you need to output the number of line segments that overlap this point. Assume M & N are very large. (So O(M*N) is really bad.)
I asked for clarification and got none so I guess they figured i was just too stupid to respond to which is cool but it made me wonder if when people talk about programmers that cant program do they mean people that cant answer these types of questions? I spent 5 or 10 min or it and gave up. But even though I didn't answer this I can code like a MF and if this question had been a programming challenge I think I could have done it.
My point is that companes should really think before sending out stuff like that to potential developers because they might pass up on some really good talent. I am not saying that I am very talented but I do know how to code and build cool products. I made digest.io and it uses clojure, ML, MapReduce to learn about your diet and help manage digestive conditions and it has paying customers that are happy. I made that and it works well so im not a rookie but I still have no idea what that 2nd question is asking.
BTW: Even though i hate these puzzles the FB puzzles are simple and I have always been able to complete them quickly.