Verbal Reasoning - Blood Relation Test - Discussion

The answer should be "Data Insufficient", as it is only known that D's son is grandson of C. Here two cases arise: (I) C here could be D's father (hence C becomes paternal grandfather of D's son), or (ii)C could be D's wife's father (hence C becomes maternal grandfather of D's son). In case I B is daughter of C, and in case II B is C's son-in-law's (D's) sister, for which there is no specific term known.

I fail to understand why the concept of paternal and maternal grandfather is not being considered while solving such questions. Also, people, please understand that statement two anyhow will be required (although the question still stays invalid) because unless the gender of B is known, how can one establish B's relationship with anyone?

1 and 2 both are require because we have to relates to B and C(see the question properly). if D is son of C then D's son becomes grand son of C automatically B becomes daughter of C.

So B is the daughter of C.. Answer is D.

Only A is correct answer no need of second statement.

Correct answer is only 1.

'Grandson of C', this line does not specifies if C is grandmother or grandfather. So the answer must be data insufficient.

If we see the question carefully, we will get the correct answer.

i.e, the question was "how B is related to C" then we need both the statements.

If the question was "how C is related to B" then statement is sufficient.

So according to me answer is "D". I hope you have understood.

Possibility of C being D's father -in-law is not specified, hence data insufficient must be the answer, as that option does not exist, the only other possibility from option makes C the father of D and B hence making C the father of B.

Both statements are required I am sure in this.

If the person is neither male nor female? What will you do?

Here B is not specified in the question, whether it is female or male. So, I think statement-2 is not necessary.

Is it right?