NA
(c) is ruled out because we need two generation-change signs (? and ÷) between P and T. Same is the case with (a). Again, (d) is ruled out because P + Q does not give the sex of P. Now, check (b)
(P) (-) ? Q (+)
?
R(-)
?
T
As 'S' is a female in options (a) and (b), they can be rejected directly. The gender of 'S' in option (c) is not known, hence, it can also be eliminated. Now, check option (d).
NA
? C has three children but we can't say that he has three daughters or three sons.
So, options (a) and (b) are incorrect.
Also, we don't know that B is a boy or girl.
So, option (c) is also incorrect.
Father's wife ? Mother; Mother's daughter ? Sister; Sister's younger brother ? His brother.
So, the boy is Deepak's brother.
NA
If R is nephew of T then the required equation must depict R as a male.
Reject option (b) and (c) because in these equations the symbol '?' denotes the gender of Q and N respectively. The sex of R remains unknown.
Reject (d) and (e) because these equations depict R older than T. Now, check (a)
R + N ? Q × T is the required equation to answer the previous question.
Here the used symbols are '+', `?' and '×'.
Therefore, redundant part of the symbols given in the direction is statement (i).
E is an engineer.
A is grandfather of E.
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