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Data Sufficiency
Questions, Tips
and Method
By: Ramandeep Singh on Saturday,
August 24, 2013
ata
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POPUL AR POST S
D
sufficiency is an important part
of quantitative aptitude
section of every competitive exam
including IBPS, LIC, Civil services, CAT
and GMAT. In almost every exam
there are several questions from
data sufficiency.
Most of the candidates try to solve
data sufficiency questions by guess
work. As every question carries same
marks, questions in this part also
deserve some time. Instead of guess
work use a simple strategy as give
below and avoid guessing the
answer.
STEPS IN SOLVING DATA
SUFFICIENCY QUESTIONS
1) Read the given problem. Don't
assume anything except universal
facts.
2) Take the first statement and
combine it with main statement. Try
to find the answer.
3) If you are unable to find the
answer using 2nd step then combine
second statement and combine it
with main statement and try to find
answer.
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answer.
4) If you are unable to find an answer
using second statement then add
both statements with main
statement and try to find answer
5) If even now you can't find answer,
simply tick both statements are
insufficient.
Directions : -
Marks A as answer if statement I
alone is sufficient to answer the
question
Marks B as answer if statement II
alone is sufficient to answer the
question
Marks C as answer if statement I and
II together are sufficient to answer
the question but neither statement
aloneis sufficient to answer the
question
DATA SUFFICIENCY
QUESTIONS AND ANSWERS
Question 1. How many people are
there in the plain ?
Statement I : 25% passengers are
women and 35% are children.
Statement II : There are 24 men in
the plain
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the plain
Answer
From Statement I we can conclude
that there are 40% men in the plain
but we can't find the exact number of
passengers
From Statement two : Number of
men passengers = 24
By combining both the statements
we get, total number of passengers =
24 * 100/40 = ( you don’t need to
calculate the answer )
Hence answer is C
Question 2. What is the difference
between monthly income of Ram and
Chaaru
Statement I : Ram earns Rs 6000 less
than Shaam
Statement II : Chaaru earns Rs 6000
more than Shaam.
Answer : In this question we don't
need to in depth. Simply there is
difference of Rs 12000
Question 3. Is x divisible by 28 ?
Statement I : x is divisible by 20
Statement II : x is divisible by 84
Answer. Using statement I - x is
divisible by 4 and 5
Using statement II - x is divisible by
3,4, and 7.
By using both statements we can
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By using both statements we can
conclude that x is divisible by 28 (
4*7), hence answer is C.
Question 4. P,Q,R,S and T are five
friends. Their mean age is 18. What is
the age of R ?
Statement I : P's age is 18
Statement II : Q's age is 2 years less
than T and T's age is 6 years less than
S.
Statement III : R's age is 6 years more
than B's age and 4 years more than
T's age.
Answer : P+Q+R+S+T = 90
From Statement I : Q+R+S+T = 72
From Statement II : Q = T - 2 and T=S -
6
So S = T + 6
Statement III : R = Q+6 and R = T + 4
Age of every friend can be defined in
terms of T's age by using all three
statements. So we can reach the
answer using all three statements.
Hence answer is C.
TIPS TO SOLVE DATA
SUFFICIENCY QUESTIONS
Never try to reach final
answer as it is not asked.
You need to find
5/5/2014 Data Sufficiency Questions, Tips and Method | Bank Exams Today
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You need to find
whether the information
provided is enough to solve
the given problem or not.
Never make any
assumption. Use only
universal rules { eg. a + b =
a + b - (a U b) }
Try to solve questions by
using above strategies
Solve question step by step.
First try to find answer using
first statement then second
and finally with both. Then
mark the answer
Even if you find answer with
only one statement, then try
to find answer with
remaining statement as
sometimes there is an
option that answer can be
find with both statements
separately.
Move on quickly and mark
answer can't be found in
case you are unable to reach
any conclusion with
information provided.
Hope you like the article, in case of
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Hope you like the article, in case of
any query or revision in article,
please comment below.
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Replies
October 12, 2013 at 12:07 PM
Reply
1. RAMAN2572
Download revision notes
here
http://www.bankexamstoday.com/2012/10/study-
notes-for-ibps-bank-
exams-govt-jobs.html
October 12, 2013 at 12:07 PM
Reply
2. RAMAN2572
What is the problem ?
October 12, 2013 at 12:08 PM
Reply
3. GOURAV KR JHA
i don't understand you
provide the tips for data
sufficiency.
October 22, 2013 at 5:45 PM
1. Ramandeep Singh
Please try to solve
some questions
yourself
October 12, 2013 at 12:08 PM
4. GOURAV KR JHA
5/5/2014 Data Sufficiency Questions, Tips and Method | Bank Exams Today
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Thanks for commenting. It's very
difficult to answer every query here,
it's better to post your query on
IBPSToday.com
Reply
i am very weak in english
paper and data sufficiency
part so you solve these
problem
November 25, 2013 at 11:28 AM
Reply
5. SHERIN SHAJU
iam so happy what u are
provided... thanku
November 25, 2013 at 11:32 AM
Reply
6. SHERIN SHAJU
thanks for your plan........
April 15, 2014 at 7:56 PM
Reply
7. ANONYMOUS
Please guide me how to
prepare for sbi p.o exams
and also which book is
best for self study
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