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Find the 1+2.2+3.2^2+…….+tn...

Find the `1+2.2+3.2^2+…….+t_n`

A

`1+(1+n)2^n`

B

`1-(1+n)2^n`

C

`1-(1-n)2^n`

D

`1+(1-n)2^n`

Text Solution

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The correct Answer is:
C
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