MCQ
What is the sum of $2 + 4 + 6 + 8 +....+ 2n\ ?\ A:$
  • $n(n + 1)$
  • B
    $n(n + 2)$
  • C
    $n(n + 3)$
  • D
    $n(n + 4)$

Answer

Correct option: A.
$n(n + 1)$

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