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2007 AMC 12A Question 24

AMC12 · 2007 AMC 12A

Question 24

For each integer $n\gt 1,$ let $F(n)$ be the number of solutions of the equation $\sin x=\sin nx$ on the interval $[0,\pi].$ What is $\displaystyle\sum_{n=2}^{2007}F(n)?$
  1. $2{,}014{,}524$
  2. $2{,}015{,}028$
  3. $2{,}015{,}033$
  4. $2{,}016{,}532$
  5. $2{,}017{,}033$