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1968 AMC 12 Question 2

AMC12 · 1968 AMC 12

Question 2

The real value of $x$ such that $64^{x-1}$ divided by $4^{x-1}$ equals $256^{2x}$ is:
  1. $-\dfrac23$
  2. $-\dfrac13$
  3. $0$
  4. $\dfrac14$
  5. $\dfrac38$