This topic covers most of the topics of reasoning i.e. alphabetical series, coding and decoding, blood relation, direction, ranking etc. In data sufficiency we don't have to find the answer rather we have to analyze the given data and decide whether the given data is sufficient to find an answer or not.
Tips
Sometimes, the information given may look like it is enough to solve a problem. For example, two linear equations with two variables. In such a case, check that the equations are not inconsistent or do not give infinitely many answers.
Solved Example
MULTIPLE CHOICE QUESTION
Try yourself: Which of the five trains P, Q, R, S and T is the best ? I.S train is better than T train, P train and R train but not as good as Q airlines II.S train is better than R train but not as good as Q which is better than T airlines
A
If the data in statement I alone are sufficient
B
If the data in statement II alone are sufficient
C
If the data either in statement I alone or statement II alone are sufficient to answer
D
If the data given in both I and II together are not sufficient
E
If the data in both the statements I and II together are necessary to answer
Correct Answer: A
From statement I Q>S>T, P, R
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MULTIPLE CHOICE QUESTION
Try yourself: On which date in March is definitely Arjun’s father’s birthday ? I.Arjun correctly remembers that his father’s birthday is before 22 March but after 14 March . II.Arjun’s brother correctly remembers that their father’s birthday is after 19 March but before 28 March.
A
If the data in statement I alone are sufficient
B
If the data in statement II alone are sufficient
C
If the data either in statement I alone or statement II alone are sufficient to answer
D
If the data given in both I and II together are not sufficient
E
If the data in both the statements I and II together are necessary to answer
Try yourself: How GOOD written in a code language ? I.‘good for all’ is written as ‘ 9 2 1’ II.‘good you go’ is written as ‘ 7 3 2’
A
If the data in statement I alone are sufficient
B
If the data in statement II alone are sufficient
C
If the data either in statement I alone or statement II alone are sufficient to answer
D
If the data given in both I and II together are not sufficient
E
If the data in both the statements I and II together are necessary to answer
Correct Answer: E
Good= 2… common in I and II
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MULTIPLE CHOICE QUESTION
Try yourself: How is M related to O ? I.M’s only sister is married to D II.O’s mother is the only daughter of D.
A
If the data in statement I alone are sufficient
B
If the data in statement II alone are sufficient
C
If the data either in statement I alone or statement II alone are sufficient to answer
D
If the data given in both I and II together are not sufficient
E
If the data in both the statements I and II together are necessary to answer
Correct Answer: E
From I and II M is grandfather of O
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MULTIPLE CHOICE QUESTION
Try yourself: Which direction is Nirmal facing at the moment ? I.Nirmal took 2 consecutive right turns after covering a distance of 6m to reach the point A. II.After walking 4m early morning from point A, Nirmal is facing opposite direction of the sun.
A
If the data in statement I alone are sufficient
B
If the data in statement II alone are sufficient
C
If the data either in statement I alone or statement II alone are sufficient to answer
D
If the data given in both I and II together are not sufficient
E
If the data in both the statements I and II together are necessary to answer
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