The question given below consists of two statements

Solution

From statement I, D, who has only one child, is the grandmother of F. F is a male. The mother of F is the only child of H. H is the grandfather of G. G is a female. J is the husband of I. Neither J nor I belongs to the 2nd generation. F has only one sister. E, who has two sons, is mother-in-law of I. The following family tree can be drawn from the given arrangement, H is grandfather of J. From statement II, There are only two members in the first generation. J is the son of E. E is the only child of H. H is married to D. D has only two grandsons. I is the sister in law of F. F belongs to the third generation. G is the sister of F. The following family tree can be drawn from the given statements, Here as the gender of H cannot be determined, so, H is either Grandfather or grandmother of J. Therefore, data in statement I alone is sufficient to answer the question, while data in statement II alone is not sufficient to answer the question.