Verbal Reasoning - Data Sufficiency - Discussion

Discussion Forum : Data Sufficiency - Section 1 (Q.No. 1)
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.


1.

Question: In which year was Rahul born ?

Statements:

  1. Rahul at present is 25 years younger to his mother.
  2. Rahul's brother, who was born in 1964, is 35 years younger to his mother.

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 both I and II, we find that Rahul is (35 - 25) = 10 years older than his brother, who was born in 1964. So, Rahul was born in 1954.

Discussion:
22 comments Page 1 of 3.

Sonam Chahar said:   7 years ago
Guys the correct birth year of Rahul is 1954.

We can't get the birth year of Rahul from 1 or 2 statement ,we need both the statements to find out the birth year of Rahul.
In the statement age is not given that Rahul is 25 years or his brother is 35 years.
Give focus.
Here it is given that Rahul is 25 year YOUNGER to his mother & his brother is 35 year YOUNGER to his mother
So, after calculation 35-25=10 year.
means Rahul is 10 year older to his brother.
If Rahul's brother born in 1964 than Rahul must be born in (1964-10=1954.)
So, Rahul is born in 1954.
Read the question carefully.
(5)

Gouthami said:   9 years ago
In this the answer is not important to find the year we use single conclusion or double statement is important and above problem clearly understood that Rahul 10 years elder to his brother so to conclude both statements are necessary to answer the question.

Yogeshwar Goswami said:   1 decade ago
Hey Guys I will help you.

Suppose Rahul's mother age is 50.

So Rahul is 25.

And his brother is 15.

So brother was in born 1964.

So Rahul is older than brother.

That's why his birth age is less than brother.

Nagesha said:   1 decade ago
Rahul is elder to his Brother and He was born in 1954. And In statement no where Rahul age is mentioned. The answer i.e E, that we need both the statement to answer this question.

Kristina said:   8 years ago
Doesn't say that the brother is biologically related either, if that is an adopted brother how is the mother and brothers age correlated?

Hasha said:   1 decade ago
It should be 1954 Rahul is elder son to his mother, when his brother is born in 1964 so obviously he should born earlier i.e. 1954.

Harika said:   8 years ago
I think the answer is 1974. Because Rahul brother age 35 and Rahul Age is 25. So the year will be 1974.

Vaishali said:   8 years ago
The answer is 1974 because Rahul brother age 35. And his brother age 25 year old. So last option is ok.

Vishesh kumar said:   7 years ago
I think answer should be D. As after reading both statement we know exactly when was Rahul born.

Pramoth said:   1 decade ago
The answer is 1974 Because Rahul brother age 35 and Rahul Age is 25. So the year will be 1974.


Post your comments here:

Your comments will be displayed after verification.