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Introduction to Data Sufficiency (in Hindi)
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In this lesson we see the definition of Data Sufficiency and solve some example questions to understand the basics.

Riya Agarwal is teaching live on Unacademy Plus

Riya Agarwal
I'm here to liberate & share my knowledge. Shortly, all DI and LR lessons will be available, in English & Hindi. Also, past year papers.

U
Unacademy user
Thank you sir.. Please continue sir
  1. 2 DATA SUFFICIENCY g0 Ou 45


  2. About Me . I hold a B.E degree in Electronics and Communication Engineering CAT, 18: Di & LR-99.59 %ile. . You can follow me on Unacademy for complete preparation guide on DILR section for CAT and OMETS.


  3. 2 DATA SUFFICIENCY g0 Ou 45


  4. DATA SUFFICIENCY?


  5. . In data sufficiency, usually, a question is followed by two or three statements. You need to determine whether any of the statements individually or together are required to find the answer. . You are not required to do the calculation, you just have to check whether with the help of given data you can find the answer or not. . Data sufficiency has many types of questions and covers many aiferent topics of quantitative aptitude


  6. SOLVED EXAMPLES


  7. 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 Il 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 Il 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.


  8. Question 1: In which year was Rahul born? Statements: Rahul's brother, who was born in 1964, is 35 years younger to his mother. seahuliat present is 25 yar youn geos years younger to his A. B. C. D. E. Ialone is sufficient while Il 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


  9. Question 1: 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. A. B. C. D. E. Ialone is sufficient while Il 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 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.


  10. Question 2: What will be the total weight of 10 poles, each of the same weight? Statements One-fourth of the weight of each pole is 5 kg. The total weight of three poles is 20 kilograms more than the total weight of two poles. A. B. C. D. E. Ialone is sufficient while Il alone is not sufficient II alone is sufficient while I alone is not sufficient Either I or Il is sufficient Neither I nor II is sufficient Both I and Il are sufficient


  11. Question 3: How many children does M have? Statements: H is the only daughter of X who is wife of M. K and J are brothers of M. A. B. C. D. E. Ialone is sufficient while Il alone is not sufficient II alone is sufficient while I alone Either I or II is sufficient Neither I nor II is sufficient Both I and II are sufficient is not sufficient


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