The boy in the photograph is the only son of the son of Suresh’s mother i.e., the son of Suresh. Hence, Suresh is the father of boy.

P – M → P is the brother of M

M N → M is the mother of N

N x Q → N is the sister of Q

Therefore, P is the maternal uncle of Q.

If D is Male, the answer is Nephew.

If D is Female, the answer is Niece.

As the sex of D is not known, hence, the relation between D and A cannot be determined.

Note: Niece – A daughter of one’s brother or sister, or of one’s brother-in-law or sister-in-law. Nephew – A son of one’s brother or sister, or of one’s brother-in-law or sister-in-law.

M x N → M is the father of N

N – C → N is the sister of C

and C F → C is the brother of F.

Hence, M is the father of C or C is the son of M.

The father of the boy’s uncle → the grandfather of the boy and daughter of the grandfather → sister of father.

The man in the photograph is the son of the only son of Lata’s grandfather i.e., the man is the son of Lata’s father. Hence, the man is the brother of Lata.

Because the sex of O is not known.

Given: D is the brother of B.

From statement 1, we can detect that D is son of C (son of D is the grandson of C).

From statement 2, we can detect that B is ‘Female’ (sister of D).

Therefore, B is daughter of C.

M x N → M is the mother of N

N % S → N is the wife of S

and S T → is the father of T.

Hence, M is the maternal grandmother of T.

The man in the photo is the son of the sister of Bajpai. Hence, Bajpai is the maternal uncle of the man in the photograph.

Father’s wife → mother. Hence, the daughter of the mother means sister and sister’s younger brother means brother. Therefore, the boy is the brother of Deepak.

‘The only daughter of the father of X’s mother’ means mother of X.

Hence X is the son of the lady in the photograph.

Ashok is the only brother of Sudeep and Veena is the sister-in-law of Ashok. Hence Veena is the wife of Sudeep. Kalyani is the mother-in-law of Veena. Kalyani is the mother of Ashok.

P x Q → P is the wife of Q

Q % R → Q is the father of R

R – T → R is the brother of T

T S → T is the sister of S.

Therefore, T is the daughter of P.

Daughter of Abhijit’s brother → niece of Abhijit. Thus the granddaughter of the woman is Abhijit’s niece.

Hence, the woman is the mother of Abhijit.