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2005 AMC 12A Question 21

AMC12 · 2005 AMC 12A

Question 21

How many ordered triples of integers $(a, b, c),$ with $a \ge 2,$ $b \ge 1,$ and $c \ge 0,$ satisfy both $\log_a b = c^{2005}$ and $a + b + c = 2005?$
  1. $0$
  2. $1$
  3. $2$
  4. $3$
  5. $4$