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wiki:donuts:springsummer2014:answers:oddsum
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wiki:donuts:springsummer2014:answers:oddsum [2014/08/11 14:08] jmb438 created |
wiki:donuts:springsummer2014:answers:oddsum [2014/08/11 14:09] (current) jmb438 |
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| There are a few different tricks to this one: | There are a few different tricks to this one: | ||
| - | you use summation notation and see that it simplifies to N^2 (where N is 50) (Richard's method) | + | You use summation notation and see that it simplifies to N^2 (where N is 50) (as Richard did) \\ |
| - | you can use the Gaussian addition trick of adding pairs (1 + 99 = 100, 25 pairs so 100*25 = 2500) (Jay) | + | You can use the Gaussian addition trick of adding pairs (1 + 99 = 100, 25 pairs so 100*25 = 2500) (Jay) \\ |
| - | or, you can do the Dr. Warnick and ask Siri. | + | Or, you can do the Dr. Warnick and ask Siri. |
wiki/donuts/springsummer2014/answers/oddsum.1407787704.txt.gz · Last modified: 2014/08/11 14:08 by jmb438