Editor
Editor
 Sep 18, 2022
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If n is any positive integer, then 2+4+6+....+2n=
Difficulty: Easy
A: 
$2^{n}-1$
B: 
$2^{n}+1$
C: 
$n^{2}+1$
D: 
n(n+1)
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NETNUST Entry TestMathematicsMathematical Induction and Binomial Theorem