Tips to Solve Data Sufficiency Problems

Tips to Solve Data Sufficiency Problems

Important Tips to Solve Data Sufficiency Question in Reasoning Section was given here , which were most expected questions in bank exams. Candidates those who are preparing for the upcoming bank exams can go through this

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 1^st statement or 2^nd statement or together in the 1^st and the 2^nd 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.

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:

What is the color of the fresh grass?

Statement:

1. Blue is Green, Red is Orange and orange is yellow
2. 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

How is ‘never’ written in a code language?

Statement:

1. ‘never ever come here’ is written as ‘ jo na hi da’ in a certain language
2. ‘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

How many children are there between P and Q in a row of children?

Statement:

1. P is 15^th from the left in the row
2. Q is exactly in the middle and there are 10 children towards his right

Solution

• From statement I alone we can deduce that the position of P is 15^th from the left
• From statement II alone we can understand that Q being in the middle and having 10 children to his right means there will be 10 children to his left too. So position of Q is 11^thfrom the left
• Now considering statements I and II together, we can conclude that there are 3 personsbetween Q (11^th) and P (15^th)
• Here answer cannot be found using one statement alone.
• Therefore, data in both statements I and II together are necessary to answer the question

Hence Answer: (5)

QUESTION

On which date in May was Arun’s birthday?

Statement:

1. Arun’s mother correctly remember that Arun’s birthday was before 14^th but after 12^th May
2. Arun’s brother correctly remembers that Arun’s birthday was after 10^th but before 15^thMay

Solution

• From statement I alone we can deduce that Arun’s birthday was on 13^th May as it was correctly remembered by his mother to be between 12^th and 14^th May i.e., 13^th May.
• From statement II alone we can’t find Arun’s birth date as it can be any day between 10^thand 15^th 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)