Is Q the granddaughter of P?

I. S has two children and Q is the daughter of R.

II. P is the father of R and is married to S.

Decide which of the following options is correct regarding the sufficiency of the statements to answer the question.

Question

Is Q the granddaughter of P?

I. S has two children and Q is the daughter of R.

II. P is the father of R and is married to S.

Decide which of the following options is correct regarding the sufficiency of the statements to answer the question.

Accepted Answer

**Solution:**

1. From statement I alone: We know that S has two children and Q is the daughter of R. However, we do not know the relationship between P and R or P and S. So, we cannot confirm if Q is P's granddaughter.

2. From statement II alone: P is the father of R and married to S. This tells us about the relationship between P, R, and S but does not mention Q or her relation to R or P.

3. Combining both statements:
   - From II, P is father of R and married to S.
   - From I, Q is daughter of R and S has two children (one of whom is R).

Therefore, Q is the daughter of R, who is the child of P. Hence, Q is the granddaughter of P.

**Answer:** The data in both statements I and II together are necessary to answer the question.

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