Each of A, B, C, D, E, F, and G has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. A has an exam on Wednesday. Only one person has an exam between A and B. D has an exam on the day immediately before B. Only one person has an exam between F and B. G's exam is on one of the days before A but on one of the days after C. On which day does G have an exam?

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**Solution:**

1. Given that A has an exam on Wednesday.

2. "Only one person has an exam between A and B" means B's exam is either Monday or Friday.

3. "D has an exam on the day immediately before B" means D's exam is the day before B.

4. If B is on Monday, D would be on Sunday (which is after Monday), so B cannot be Monday.

5. Therefore, B is on Friday and D is on Thursday.

6. "Only one person has an exam between F and B" means F's exam is either Wednesday or Sunday.

7. Wednesday is already taken by A, so F must be on Sunday.

8. "G's exam is on one of the days before A but on one of the days after C".

- A is on Wednesday.

- Days before A are Monday and Tuesday.

- So G's exam is on Tuesday or Monday.

- Since G's exam is after C's exam, C must be on Monday and G on Tuesday.

9. The remaining person E takes the remaining day Saturday.

**Final schedule:**

- Monday: C
- Tuesday: G
- Wednesday: A
- Thursday: D
- Friday: B
- Saturday: E
- Sunday: F

**Answer:** Tuesday

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