Question

Four students-A, B, C, D-choose one subject each: History, Math, Science, English. A does not choose History. B does not choose Math. C does not choose English, who chooses History?

• A. A
• B. B
• C. C
• D. D
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Hint:

For follow-up set questions, use previous assignments to quickly assign remaining items, verifying all constraints.

Answer 1

The Correct Option is B

- Step 1: Recall constraints. A not History. B not Math. C not English. Each chooses a different subject. 
- Step 2: Use Question 27 solution. A has Science. 
- Step 3: Assign History. A cannot have History. Remaining: B, C, D. B can have History, C can have History, D can have History. 
- Step 4: Assign remaining subjects. Subjects left: History, Math, English. If B has History, C has Math (not English), D has English. Assignment: A-Science, B-History, C-Math, D-English. 
- Step 5: Verify. Constraints: A not History (satisfied), B not Math (satisfied), C not English (satisfied). 
- Step 6: Final conclusion. Option (2) B is the correct answer.