P % Q' means 'P is the father of Q'.
'P × Q' means 'P is the brother-in-law of Q'.
'P # Q' means 'P is the husband of Q'.
'P $ Q' means 'P is the daughter of Q'.
'P @ Q' means 'P is the brother of Q'.
'P & Q' means 'P is the mother of Q'.
If 'Y # X & A × Z @ C & B', If A is the only child of his parents, then How is A related to B?
1
Father
2
Brother
3
Cousin
4
Uncle