Re: maths problem for DS
First off I think you misunderstood my original comment about math and logic. I didn't mean that advanced problems can be easily solved without recourse to advanced math. I meant that they could in theory be solved that way. After all advanced math is just a logical progression from less advanced math. (Which is why it is ridiculous to postulate someone who is extremely adept at everything through calculus could have more trouble with higher math than someone who wasn't.)
Meanwhile unless you have some trick up your sleeve your problem is a perfect example of my point. Add them up two at a time from the outside inwards. n/2 pairs of n+1 totals.
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