Data Sufficiency on Verbal Reasoning related Questions and Answers

Question :   Question: In which year was Rahul born ? Statements: Rahul at present is 25 years younger to his mother. Rahul"s brother, who was born in 1964, is 35 years younger to his mother. 1. I alone is sufficient while II alone is not sufficient 2. II alone is sufficient while I alone is not sufficient 3. Either I or II is sufficient 4. Neither I nor II is sufficient 5. Both I and II are sufficient Answer :   5 - Both I and II are sufficient