Verbal Reasoning - Data Sufficiency - Discussion

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.

[A]. I alone is sufficient while II alone is not sufficient
[B]. II alone is sufficient while I alone is not sufficient
[C]. Either I or II is sufficient
[D]. Neither I nor II is sufficient
[E]. Both I and II are sufficient

Answer: Option E

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.


Hema said: (May 14, 2011)  
How come he be 25 yaers old if he is born in 1954 he might have been born in 1974?

Pramoth said: (Jun 4, 2011)  
The answer is 1974 Because Rahul brother age 35 and Rahul Age is 25. So the year will be 1974.

Layeeq said: (Sep 5, 2011)  
25 years younger to his mother, but not 25 years old.

Mahendra said: (Jan 3, 2012)  
I think answer is 2nd option, why because with help of 1st option we can't get answer.

Satyendra Gangwar said: (May 15, 2012)  
The answer is 1974 because Rahul brother age 35.
And his brother age 25 year old.

Jagdeesh said: (Mar 17, 2013)  
The answer is 1974 because rahul is the elder one and he should have been born in 1974.

Hasha said: (May 15, 2013)  
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.

Nagesha said: (Aug 2, 2013)  
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.

Yogeshwar Goswami said: (Sep 4, 2013)  
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.

Gouthami said: (Sep 19, 2014)  
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.

Asif said: (Oct 25, 2014)  
We don't consider the answer but judge whether the statements are sufficient or not.

Mht said: (Dec 3, 2014)  
Mother age is not given, so we can not get mother age by option 1.

Murali said: (Jul 29, 2015)  
He didn't mention the brother is younger or older so insufficient data.

Harika said: (Nov 23, 2015)  
I think the answer is 1974. Because Rahul brother age 35 and Rahul Age is 25. So the year will be 1974.

Kristina said: (Jan 8, 2016)  
Doesn't say that the brother is biologically related either, if that is an adopted brother how is the mother and brothers age correlated?

Vaishali said: (Feb 20, 2016)  
The answer is 1974 because Rahul brother age 35. And his brother age 25 year old. So last option is ok.

Arun said: (Jun 6, 2016)  
His age will be 35 if he born in 1964.

Mahesh said: (Jun 16, 2017)  
I think correct answer is 1974.

Sonam Chahar said: (Jul 1, 2017)  
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.

Vishesh Kumar said: (Jul 14, 2017)  
I think answer should be D. As after reading both statement we know exactly when was Rahul born.

Saurav Singh said: (Feb 6, 2018)  
Answer must be D as we need both statement.

Muskan Dubey said: (Sep 25, 2020)  
I think II is the correct Answer.

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