Wednesday, October 16, 2019

summation - Question on a tricky Arithmo-Geometric Progression::





14+28+316+432+564+




This summation was irritating me from the start,I don't know how to attempt this ,tried unsuccessful attempts though.


Answer



S=14+28+316+432+564+2S=12+24+38+416+532(2)(1):S=12+14+18+116+132=12112=1


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