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Custom code (3 = mother, 4 = brother, 9 = husband, 5 = daughter): Make K the mother-in-law of M. Which expression guarantees that K is the mother of M's spouse (i.e., K is M's mother-in-law)? Choose the correct encoded sequence.

Difficulty: Easy

Correct Answer: M9N5K3J

Explanation:


Decode the correct option

  • M9N ⇒ M is husband of N.
  • N5K ⇒ N is daughter of K ⇒ K is parent of N.
  • K3J ⇒ K is mother of J ⇒ confirms K is female.


Conclusion
K is the mother of N, who is M's wife ⇒ K is M's mother-in-law.


Why others fail
They make K a daughter or mother of someone not tied as the spouse's parent of M.

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