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[" 14) If the sum of "n" terms of an "AP...

[" 14) If the sum of "n" terms of an "AP" is given by "S_(n)=a+bn+cn^(2)" where "a,b,c" are independent of "n" ,then "],[[" 14.(t) the sum offrerece is: "," (B) "," (B) "," (C) "2c],[" (A) "," 2a "]]

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