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VTMO 2026 - Grade 5 - Semifinal - SET 10 - Self-study Question 22

VTMO · VTMO 2026 - Grade 5 - Semifinal - SET 10 - Self-study

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.

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