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IMSO 2009 Mathematics - International Exploration Question 3

IMSO Maths · IMSO 2009 Mathematics - International Exploration

Question 3

Muchlis does five different tasks A,B,C,D,E, one per day on five consecutive days. Each friend Ali, Benny, Charlie, Dennis, Ethan helps on exactly one task.

- Task A is one day after Ali helps.
- Task B is three days after Benny helps.
- On day 4 the task is C or D.
- Charlie helps with A, D or E.
- The helper for E is Dennis or Benny.

Complete the day–task–helper table for days 1 through 5.

Question illustration