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1998 AMC 12 Question 5

AMC12 · 1998 AMC 12

Question 5

If $2^{1998}-2^{1997}$ ${}-2^{1996}+2^{1995}$ $=k\cdot2^{1995},$ what is the value of $k?$
  1. $1$
  2. $2$
  3. $3$
  4. $4$
  5. $5$