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AMC10 2027 - Self-practice Set 5 Question 20

AMC10 · AMC10 2027 - Self-practice Set 5

Question 20

How many ordered pairs of positive integers $(m,n)$ satisfy $\frac4m+\frac2n=1$?
  1. $0$
  2. $3$
  3. $4$
  4. $6$
  5. $9$