Civil Service Exam Reviewer · Logical Reasoning · hard
In a certain code, P + Q means "P is the father of Q," P − Q means "P is the sister of Q," and P × Q means "P is the son of Q." If J × K + L − M, how is J related to M?
- Brother
- Father
- Son
- Cousin
Answer
A. Brother
Solution
J × K: J is the son of K. K + L: K is the father of L. L − M: L is the sister of M, so K is also the father of M. J and M are both children of K, and J is male, so J is M's brother.
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