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Flag Algebra> 1 3 +3.2 2 +3 3 +3.4 2 +5 3 +2.6 2 .........
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13+3.22+33+3.42+53+2.62.............................................................................................................................to n terms

Ankur Singh , 6 Years ago
Grade 12th pass
anser 1 Answers
Deepak Kumar Shringi

Last Activity: 6 Years ago

there are two series here
(2r-1)3and one more is 3(2r)2now do their sigma and apply formula for that
as sigma n =n(n+1)/2
and sigma n^2=n(n+1)(2n+1)/6

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