Tips and Tricks and Shortcuts for Data Sufficiency

Tips and Tricks and Shortcuts for Data Sufficiency :-

Step 1- Examine the Question properly

Step 2- Consider each statement individually

Step 3- Combine the two statements

A.  If data in the  statement I alone is sufficient to answer the question.
B.  If data in the statement II alone is sufficient to answer the question.
C.  If data either in the statement I alone or statement II alone are sufficient to answer the question.
D.  If data given in both I & II together are not sufficient to answer the question.
E.  If data in both statements I & II together are necessary to answer  the question.

Question 1

Who is taller among P, Q, R, S & T?
(l) S is shorter than Q. P is shorter than only T.
(ll) Q is taller than only S. T is taller than P and R.

Correct Option: C

Explanations:

From I : P is shorter than only T, this means that P is taller than all Q, R & S, so T is tallest.
From II : Q only taller than S, so S is shortest, and Q is second shortest, Now T taller than P and R both, So tallest of all.

Question 2

What is the distance between point P and point Q?
(l) Point R is 10 m west of point P and point S is 10 m north of point P.
(ll) Point Q is 10 m south-east of point R. Point S is 20 m north-west of point Q.

Correct Option: D

Explanations:

From I : No relation between points P and Q
From II : In this since we don’t know the angles between sides of triangle forming with points PQS and PQR, PQ cannot be determined.

Question 3

How is Shubham related to Shivani?
(l) Shubham is brother of Meenal. Shivani is niece of Pooja.
(ll) Neeraj is Meenal’s uncle and Preeti’s brother