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[" Let "a(y)a(y),a(y),......,a(m)" be an...

[" Let "a_(y)a_(y),a_(y),......,a_(m)" be an arithmetic progression with "a_(1)=3" and "S_(p)=sum_(k=1)^(n)a_(n),1<=p<=100." For "],[" integernwith "1<=n<=20," let "m=5n" .If "(S_(m))/(S_(n))" does not depend on "n" ,then "a_(2)" ,is "],[qquad ln f sqrt(m)" ."n" .mat "t]

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