Question 22
Mr Lượng tells Mr Dũng, “I am so busy teaching that I cannot go away for a few days.” Mr Dũng replies, “But you have no lessons on Saturdays or Sundays.” Mr Lượng says, “Even so, in December I have no three consecutive days off.” What is the least number of days Mr Lượng teaches in December 2016? Explain.
Practice interpretation: count only runs of three consecutive dates that lie entirely within December 2016.

Practice interpretation: count only runs of three consecutive dates that lie entirely within December 2016.
