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\frac{1}{3.4} + \frac{1}{4.5} + \frac{1}{5.6} + . . . . . . . . . n

তম পদ পর্যন্ত = ?

\frac{n + 1}{3 (n + 2)}

\frac{n}{3 (n + 3)}

\frac{n}{2 (n + 3)}

\frac{n + 2}{3 (n + 3)}

ANS : 2

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