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Data Sufficiency

by Placement Factory
Type: NoteSpecialization: Verbal ReasoningViews: 4Uploaded: 1 month agoAdd to Favourite

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Placement Factory
Important Concepts and Tips to Solve Data Sufficiency Questions DATA SUFFICIENCY Tips to Solve Data Sufficiency Questions  These type of questions consists of problems on any reasoning topics like blood relation, coding-decoding, direction test, ranking, seating arrangement, etc. followed by statements containing clues to solve the question  The candidates are supposed to find out which of the given statements is or are sufficient to solve the given question  This section tests the candidate’s efficiency to determine the information necessary to solve the given problem  We have to make sure whether the question can be solved with the help of information provided in the 1st statement or 2nd statement or together in the 1st and the 2nd statement  We are not supposed to assume anything beyond the information given in the question and the following statements EXAMPLE: DIRECTIONS: Answer (1) if the data in statement I alone is sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question. Answer (2) if the data in statement II alone is sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question. Answer (3) if the data either in statement I alone or in statement II alone are sufficient to answer the question. Page 1
Answer (4) if the data even in statement I and II together are not sufficient to answer the question. Answer (5) if the data in both statement I and II together are necessary to answer the question. QUESTION 1 On which date in May was Arun’s birthday? Statement: I. Arun’s mother correctly remember that Arun’s birthday was before 14 th but after 12th May II. Arun’s brother correctly remembers that Arun’s birthday was after 10th but before 15th May Solution  From statement I alone we can deduce that Arun’s birthday was on 13th May as it was correctly remembered by his mother to be between 12 th and 14th May i.e., 13th May.  From statement II alone we can’t find Arun’s birth date as it can be any day between 10th and 15th may.  Therefore, statement I alone is sufficient to answer the question, while the data in statement II alone are not sufficient to answer the question. Hence Answer: (1) QUESTION 2 What is the color of the fresh grass? Page 2
Statement: I. Blue is Green, Red is Orange and orange is yellow II. Yellow is white, white is black, green is brown and brown is purple Solution  The color of fresh grass is Green.  From statement I alone we cannot deduce the code for green.  From statement II alone we can determine the code for Green i.e., brown (Green is Brown).  Therefore, statement II alone is sufficient to answer the question, while the data in statement I alone are not sufficient to answer the question. Hence Answer: (2) QUESTION 3 How is A related to B? Statement: I. B and C are children of D who is wife of A II. E’s brother A is married to B’s mother Solution  From statement I alone we can deduce that B is the child of D who is the wife of A. Therefore, A is B’s Father.  From statement II alone we can determine that A is married to B’s mother that shows that A is B’s father. Page 3
 Therefore, statement I alone or in statement II alone are sufficient to answer the question. Hence Answer: (3) QUESTION 4 How is ‘never’ written in a code language? Statement: I. ‘never ever come here’ is written as ‘ jo na hi da’ in a certain language II. ‘come here and go back’ is written as ‘ ho ma si no di’ in that language Solution  From statement I ‘never’ cannot be determined it can be either one of jo, na, hi or da  From statement II there is no ‘never’ in the statement and even considering both the statements there is no common term using which the code for ‘never’ can be determined  Therefore, data even in statement I and II together are not sufficient to answer the question Hence Answer: (4) QUESTION 5 How many children are there between P and Q in a row of children? Statement: I. P is 15th from the left in the row II. Q is exactly in the middle and there are 10 children towards his right Page 4

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