1.

Let f(n)=1 + 1/2 + 1/3 +......+1/n, Then f(1)+f(2)+f(3)+.....+f(n) is equal to

Answer»

`NF(N)-1`
`(n+1)F(n)-n`
`(n+1)f(n)+n`
`nf(n)+n`

ANSWER :B


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