Puzzle: Four trainings (Excel, Filing, Ethics and Writing) are held from Monday to Thursday, one per day. Writing is held the day after Excel. Filing is not held on Monday. Ethics is held on an earlier day than Excel. Filing is held after Writing. Which training is held last in the week?
Correct answer: B. Filing
Excel cannot be on Monday because Ethics must come before it. Filing must come after Writing, which in turn comes right after Excel, so Excel and Writing take Tuesday and Wednesday, Filing takes Thursday and Ethics takes Monday. The only schedule is: Monday Ethics, Tuesday Excel, Wednesday Writing, Thursday Filing.
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