Verbal Reasoning - Data Sufficiency - Discussion

Discussion Forum : Data Sufficiency - Section 1 (Q.No. 20)
Directions to Solve

In each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and

Give answer

  • (A) If the data in statement I alone are sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question
  • (B) If the data in statement II alone are sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question
  • (C) If the data either in statement I alone or in statement II alone are sufficient to answer the question
  • (D) If the data given in both statements I and II together are not sufficient to answer the question and
  • (E) If the data in both statements I and II together are necessary to answer the question.


20.

Question: How is Tanya related to the man in the photograph ?

Statements:

  1. Man in the photograph is the only son of Tanya's grandfather.
  2. The man in the photograph has no brothers or sisters and his father is Tanya's grandfather.

I alone is sufficient while II alone is not sufficient
II alone is sufficient while I alone is not sufficient
Either I or II is sufficient
Neither I nor II is sufficient
Both I and II are sufficient
Answer: Option
Explanation:

From I, we conclude that the man is the only son of Tanya's grandfather i.e. he is Tanya's father or Tanya is the man's daughter.

From II, we conclude that the man's father is Tanya's grandfather. Since the man has no brothers or sisters, so he is Tanya's father or Tanya is the man's daughter.

Discussion:
51 comments Page 2 of 6.

Jay said:   4 years ago
From 1: The man in the photograph is the only son of Tanya's grandfather.

It means he had only one son, because he said only son, (that means no daughters and no sons, rather than one son) and he said TANYA'S GRANDFATHER, which means granddaughter of his SON. IT means Tanya is the daughter of her grandfather"s son.

So, only one statement can be correct.
(2)

Srinju said:   4 years ago
First of all, the son of Tanya's grandfather maybe her maternal uncle or her father.

Correct me, if I am wrong.
(2)

Jyotishman said:   3 years ago
Yes, I too think option C is correct.
(2)

Sri said:   2 years ago
How can we know the gender of Tanya?

Can anyone please explain me this?
(2)

Faizan Alam said:   2 years ago
Statement I: “Man in the photograph is the only son of Tanya’s grandfather.”
This could mean the man is either Tanya’s father or her paternal uncle.

Statement II: “The man in the photograph has no brothers or sisters and his father is Tanya’s grandfather.”
This clarifies that the man has no siblings, which means he cannot be Tanya’s paternal uncle (since he would need to have a brother, Tanya’s father).

Given this, Statement II alone is indeed sufficient to determine that the man in the photograph is Tanya’s father, as he has no siblings and his father is Tanya’s grandfather.

So, the correct option should be B) II alone is sufficient while I alone is not sufficient.
(2)

Sai said:   6 years ago
Right, agree @Jayanathan Ravi.
(2)

Sai said:   6 years ago
In both cases, the man is Tanya's father.

So, option C is correct.
(1)

Mitesh said:   6 years ago
In case some guys are saying that only son doesn't mean Tanya's grandfather has no daughter, yes it is possible but the old man would be maternal grandfather not the grandfather with respect to Tanya.

As per question option c is correct.

Mike Yako said:   8 years ago
Definitely C.

If you look at the explanation, both answers end in this phrase, "he is Tanya's father or Tanya is the man's daughter".

Vincent said:   8 years ago
The answer should have been C. Both statements convey the man as Tanya's father. The gender of Tanya is irrelevant to the answer.


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