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The Academic Staff College organised a refresher course in six different subjects, only
one on each day, from Monday to Sunday.
i. One of the days was a holiday.
ii. Psychology was on the previous day of the holiday.
iii. The course ended with History.
iv. Economics, which was taken up on Wednesday, was on the previous day of
Physics.
v. Psychology and Philosophy had a gap of two days.
vi. There was gap of one day between Sociology and Economics and a gap of two
days between Sociology and Physics.
Which day was a holiday?
Wednesday
Saturday
Friday
Thursday
- Let's break down the clues:
- Only six subjects in seven days, so 1 holiday.
- Psychology is right before the holiday.
- Course ends with History, so Sunday is History.
- Economics is on Wednesday, and Physics right after.
- Psychology and Philosophy: exactly 2 days gap.
- Sociology & Economics: 1-day gap; Sociology & Physics: 2-day gap.
- Placing fixed subjects:
- Wednesday: Economics
- Thursday: Physics (immediately after Economics)
- Sunday: History
- Working backwards, holiday must be after Psychology and before Philosophy (because of the 2-day gap with Philosophy).
- Try the options:
- If the holiday is Thursday, then:
- Psychology must be on Wednesday, but Wednesday is Economics. Conflict.
- If the holiday is Friday:
- Psychology is on Thursday. But Thursday is Physics. Conflict.
- If the holiday is Saturday:
- Psychology is on Friday.
- Sunday is History.
- Wednesday is Economics, Thursday is Physics.
- Philosophy must be Monday (because two days gap from Psychology on Friday: Friday - holiday(Saturday) - Sunday (History) — can't work due to positions).
- If the holiday is Wednesday:
- Psychology is on Tuesday, holiday on Wednesday, Economics on Thursday (conflict as Economics is fixed on Wednesday).
- By elimination:
- Thursday fits best: Economics (Wed), Physics (Fri), Holiday (Thu), Psychology (Wed, just before), etc.
- Correct answer: Option 4, Thursday.
By: santosh ProfileResourcesReport error
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