There are 9 members in family i.e. M, N, O, X, Y, Z, I, J and Q.  There are four females and three married couples. M is paternal uncle of I.  J has only 2 children. K is daughter-in-law of N.  O is married to N.  X and Y are sons of O.  Y is not married.  Z is married to J.  N is son-in-law of J.  Z is a male member. How N’s sister-in-law is related to J’s brother-in-law ?

Niece

Note:

↑ or ↓ ⇒ Upward or downward line shown "generation gap" .

   =    ⇒ Double lines shown "relation b/w Husband & Wife"

   —   ⇒ single line shown "relation between them other than Husband & Wife".

   +   ⇒ Plus sign shown " Male".

   -   ⇒minus sign shown " Female".