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ITMC 2018 Grade 11 National Preliminary set01 Question 22

ITMC · ITMC 2018 Grade 11 National Preliminary set01

Question 22

Line $L$ passes through $(4,5)$ and $(1,11)$. How many ordered pairs $(x,y)$ on $L$ have both coordinates positive integers?
  1. $2$
  2. $3$
  3. $5$
  4. $6$
  5. More than 6