E
Editor
Sep 18, 2022
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)
Report issue
ID: 63273db9ca83163ac3a11637