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1+1.1!+2.2!+3.3!+.......+n.n! is equal t...

`1+1.1!+2.2!+3.3!+.......+n.n!` is equal to

A

`n!`

B

`(n-1)!`

C

`(n+1)!`

D

n

Text Solution

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The correct Answer is:
C
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Knowledge Check

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

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    A
    ` -a _ 0 `
    B
    `3^n `
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