Pointing to a boy in a photograph, Akhil says, "He is the son of my mother's only son." How is Akhil related to that boy?

Pointing to a boy, Namrata says, “He is the son of my grandfather’s only child.” How is the boy related to Namrata? 

(A) ‘P × Q’ means ‘Q is mother of P’.
(B) ‘P + Q’ means ‘P is father of Q’.
(C) ‘P – Q’ means ‘P is brother of Q’.
(D) ‘P ÷ Q’ means ‘Q is sister of P’.
Which of the following means ‘M is niece of T’?

P's father Q's son. M is the paternal uncle of P and N is the brother of Q. How is N related to M?

D said, "A's father is the only brother of my sister,s son." How is A's father related to D?

Pointing out to a photograph, Swati said, "he is the uncle of my brother's sister". How is the person in photograph related to Swati?

Pointing to a lady, Vimal said, " she is the wife of my Grandfather's son". How is the lady related to Vimal?

A boy meets a girl in the party who introduces herself as the daughter of his grandfather's daughter's brother. How is the boy related to the girl?

Find out the wrong number: 
2 , 8 ,32 , 148 , 765 , 4626 , 32431

Find out the wrong term: 
108 , 54 , 36 ,18 , 9 , 6 , 4