(i) ‘S × T means ‘S is the brother of T’.
(ii) ‘S ÷ T means T is the father of S.’
(iii) ‘S + T’ means ‘S is the sister of T’.
(iv) ‘S – T means ‘S is the mother of T’.
Which of the following means R is the paternal uncle of B?
(a)B × Q ÷ L × R
(b)B × D ÷ J × R × K
(c)R × P ÷ S × B
(a) B × Q ÷ L × R : B is brother of Q and L is father of Q. Also, L is brother of R.
=> R can be either male or female, thus we cannot say if R is paternal uncle of B or not.
(b) B × D ÷ J × R × K : B is brother of D and J is father of D. Also, J is brother of R, who is brother of K.
=> R is male and paternal uncle of B.
(c) R × P ÷ S × B : R is brother of P and S is father of P. Also, S is brother of B.
=> R is nephew of B.
Thus, only from (b), R is paternal uncle of B.
=> Ans - (B)
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