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Reported Question / Answer
Q.) 2<sup>1</sup> + 2<sup>2</sup> +2<sup>3</sup> +….+2<sup>n</sup> =
1)
2(2<sup>n</sup> - 1)
2)
2(2<sup>n-1</sup> -1)
3)
2(2<sup>n+1</sup> -1)
4)
None of the Above
5)
NULL
Answer :
1
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Human Verification : Answer 2 + 3 = ?
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