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2019 AMC 10B Question 6

AMC10 · 2019 AMC 10B

Question 6

A positive integer $n$ satisfies the equation $$
(n+1)! + (n+2)! = n! \cdot 440.
$$ What is the sum of the digits of $n?$
  1. $ 2 $
  2. $ 5 $
  3. $ 10 $
  4. $ 12 $
  5. $ 15 $