Let `alpha(n)=1-(1)/(2)+(1)/(3)-(1)/(4)+.........+(-1)^(n-1)(1)/(n),ninN`, thenA. `(1)/(n+1)+(1)/(n+2)+.........+(1)/(2n)=alpha(2n)`B. `alpha(2n)lt1AAninN`C. `alpha(2n)ge(1)/(2)AAninN`D. `alpha(n)gt(1)/(2)AAninN`

Let `alpha(n)=1-(1)/(2)+(1)/(3)-(1)/(4)+.........+(-1)^(n-1)(1)/(n),ni

1.	Let `alpha(n)=1-(1)/(2)+(1)/(3)-(1)/(4)+.........+(-1)^(n-1)(1)/(n),ninN`, thenA. `(1)/(n+1)+(1)/(n+2)+.........+(1)/(2n)=alpha(2n)`B. `alpha(2n)lt1AAninN`C. `alpha(2n)ge(1)/(2)AAninN`D. `alpha(n)gt(1)/(2)AAninN`
Answer» Correct Answer - A::B::C

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Let `alpha(n)=1-(1)/(2)+(1)/(3)-(1)/(4)+.........+(-1)^(n-1)(1)/(n),ninN`, thenA. `(1)/(n+1)+(1)/(n+2)+.........+(1)/(2n)=alpha(2n)`B. `alpha(2n)lt1AAninN`C. `alpha(2n)ge(1)/(2)AAninN`D. `alpha(n)gt(1)/(2)AAninN`

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