1.

श्रेढ़ी `1.4+3.7+5.10+..........` के n पदों का योगफल हैA. `(n^(2)(n+1)^(2))/(4)`B. `(n^(2)(4n^(2)+5n-1))/(2)`C. `(n(4n^(2)+5n-1))/(2)`D. `(4n^(2)+5n-1)/(2)`

Answer» Correct Answer - C


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