This presentation is aimed to help aspirants and also faculties for various competitive exams.

1. CHAPTER 8
DATA SUFFICIENCY
Reasoning

2. 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.

3. (1) If statement I alone is sufficient but
statement II alone is not sufficient.
(2) If statement II alone is sufficient but
statement I alone is not sufficient.
(3) If each statement alone (either I or II) is
sufficient.
(4) If statement I and II together are not
sufficient.
(5) If both statement together are sufficient,
but neither statement alone is sufficient.

4. Q.1. Who scored highest among P, Q, R, S and T ?
(I) Q scored more than S, but not as much as R.
(II) T scored more than R, but not more than P.
Explanation:
According to question-
(I) R>Q>S, (II) P>T>R
So, P>T>R>Q>S
P scored the highest.
So, both statements are needed to arrive at
answer.
Ans.(5)

5. Q.2. Five friends P, Q, R, S and T are standing in a
row facing East. Who is standing at extreme
left end ?
(1) R is between T and Q
(2) Only P is between S and T. R is immediately
right of T.
Explanation:
According to question :
S is extreme left end. S
P
So, both statements are needed to T
arrive at answer. R
Ans.(5) Q

6. Q.3. Mahima's flat is on which floor of the five floor
apartment ?
(I) Her flat is exactly above Gita's flat whose flat is
exactly above Nitin's first floor.
(II) Jayash's flat, which is adjacent to Mahima's flat
exactly below Ahmed's flat who is on second
floor.
Explanation:
(I) Mahima 3 floor, Gita 2 floor, Nitin - 1 floor
(II) Jayesh 4 floor, Mahima 3 floor, Ahmed 2 floor
So, the ans.(3)

7. Q.4. Who among A, B, C, D and E read the book at
last ?
(I) F, who gave the book to B after reading, was
third to read to same.
(II) C, who read the book after A, but before D
and it is the persons it is the third person to
read B is not the first person.
Explanation:
According to the question :
(I) _ _ F B _
(II) _ A C D B
Ans.(2) Only IInd statement is sufficient.

8. Q.5. How is Sarita related to Nirmala ?
(I) Sarita's Husband is the only son of Nirmala's
mother
(II) Sarita’s brother and husband are cousin.
Explanation:
So, only I statement is sufficient to give the answer
but II statement is not sufficient.
Ans.(1)
HS N

9. Practice Questions

10. Q.1-3.Each of the questions below consists of a question and two
statements. You have to decide whether the data given in the
statements are sufficient to answer the questions.
Give answer (1) if the data in statement I alone are sufficient
to answer the question, while the data in statement II alone are not
sufficient to answer the question.
Give answer (2)if the data in statement II alone are sufficient
to answer the question, while the data in statement I alone are not
sufficient to answer the question.
Give answer (3)if the data either in statement I alone or
statement II alone are sufficient to answer the question.
Give answer (4) if the data neither in statement I nor II
together are not sufficient to answer the questions,
Give answer (5)if the data in both statements I and II together
are necessary to answer the questions.
SBI PO 28-04-2013

11. Q.1. Six people - S, T, U, V, W and X are sitting
around a circular table facing the centre. What is
T's position with respect to X ?
I. Only two people sit between U and W. X is
second to the left of W. V and T are immediate
neighbours of each other.
II. T is to the immediate right of V. There are only
two people between T and S. X is an immediate
neighbour of S but not of V.

12. Q.2. Seventeen people are standing in a straight line
facing south. What is Bhavna's position from the
left end of the line ?
I. Sandeep is standing second to the left of
Sheetal. Only five people stand between Sheetal
and the one who is standing at the extreme right
end of the line. Four people stand between
Sandeep and Bhavna.
II. Anita is standing fourth to the left of Sheetal.
Less than three people are standing between
Bhavna and Anita.

13. Q.3. Five letters -A, E, G, N and R are arranged left to
right according to certain conditions. Which letter
is placed third ?
I. G is placed second to the right of A. E is to the
immediate right of G. There are only two letters
between R and G.
II. N is exactly between A and G. Neither A nor G is
at the extreme end of the arrangement.

14. Q.1-5.Each of the question below consists of a question and three
statements numbered I, II and III given below it. You have to decide whether
the data provided in the statements are sufficient to answer the question.
Give answer (1) If the data in Statement I and II are sufficient to
answer the question, while the data in Statement III are not required to
answer the question.
Give answer (2) If the data in Statement I and III are sufficient to
answer the question, while the data in Statement II are not required to
answer the question.
Give answer (3) If the data in Statement II and III are sufficient to
answer the question, while the data in Statement I are not required to
answer the question.
Give answer (4) If the data either Statement I alone or Statement
II alone or Statement III alone are sufficient to answer the question.
Give answer (5) If the data in all Statement I, II and III together are
necessary to answer the question.
CWE PO 17-06-2012

15. Q.1. Among six people P, Q, R, S, T and V each lives on a
different floor of a six storey building having six floors
numbered one to six (the ground floor is numbered 1,
the floor above it, number 2 and so on and the topmost
floor is numbered 6). Who lives on the topmost floor ?
(I) There is only one floor between the floors on
which R and Q live. P lives on an even numbered
floor.
(II) T does not live on an even numbered floor. Q
lives on an even numbered floor. Q does not live
on the topmost floor.
(III) S lives on an odd numbered floor. There are
two floors between the floors on which S and P
live. T lives on a floor immediately above R's floor.

16. Q.2. There are six letters W, A, R, S, N and E. Is
'ANSWER' the word formed after performing the
following operations using these six letters only ?
(I) E is placed fourth to the right of A. S is not
placed immediately next to either A or E.
(II) R is placed immediately next (either left or
right) to E. W is place immediately next (either
left or right) to S.
(III) Both N and W are placed immediately next
to S. The word does not begin with R. A is not
placed immediately next to W.

17. Q.3. Point D is in which direction with respect to Point B ?
(I) Point A is to the west of Point B. Point C is to
the north of Point B. Point D is to the south of Point
C.
(II) Point G is to the south of Point D. Point G is 4m from
Point B. Point D is 9m from Point B.
(III) Point A is to the west of Point B. Point B is exactly
midway between Point A and E. Point F is to
the south of Point E. Point D is to the west of Point
F.

18. Q.4. How is 'One' coded in the code language ?
(I) 'one of its kind' is coded as 'zo pi ko fe' and 'in
kind and cash' is coded as 'ga to ru ko'
(II) 'its point for origin' is coded as 'ba le fe
mi' and 'make a point clear' is coded as 'yu si
mi de'
(III) 'make money and cash' is coded as 'to mi ru
hy' and 'money of various kind' is coded as 'qu
ko zo hy'.

19. Q.5. Are all the four friends viz. A, B, C and D who are
sitting around a circular table, facing the centre ?
(I) B sits second to right of D. D faces the centre.
C sits to immediate right of both B and D.
(II) A sits to immediate left of B. C is not an
immediate neighbour of A. C sits to immediate
right of D.
(III) D is an immediate neighbour of both A and
C. B sits to the immediate left of A. C sits to the
immediate right of B.

20. Q.1-5.Each of the questions below consists of a
question and three statements numbered I, II and III
given below it. You have to decide whether the data
provided in the statements are sufficient to answer
the question.
CWE PO 18-09-2011

21. Q.1. How many daughters does W have ?
I. B and D are sisters of M.
II. M’s father T is husband of W.
III. Out of the three children which T has, only one is a
boy.
(1) Only I and III (2) Only II & III
(3) All I, II and III are required to answer the question.
(4) Question cannot be answered even with all I, II and III
(5) Only I and II

22. Q.2. Who among A. B, C, D, E and F each having a
different height, is the tallest?
I. B is taller than A but shorter than E.
II. Only two of them are shorter than C.
III. D is taller than only F.
(1) Only I and II (2) Only I and III (3) Only II & III
(4) All I, II and are required to answer the question
(5) All I, II and III are not sufficient to answer the
question.

23. Q.3. How is ‘go’ written in a code language ?
I. ‘now or never again’ is written as ‘tom ka na sa’
in that code language.
II. ‘you come again now’ is written as ‘ja ka ta sa’ in
that code language
III. ‘again go now or never’ is written as ‘na ho ka sa
tom’ in that code language
(1) Only I and III (2) Only II and III (3) Only I & II
(4) All I, II and III are required to answer the question
(5) None of these

24. Q.4. Towards which direction is village J from village W ?
I. Village R is to the west of Village W and to the
north of Village T.
II. Village Z is to the east of Village J and to the
south of Village T.
III. Village M is to the north east of Village J and
north of Village Z.
(1) Only III (2) Only II and III
(3) All I, II and III are required to answer the question
(4) Question cannot be answered even with all I, II and III
(5) None of these

25. Q.5. On which day of the week starting from Monday did
Suresh visit Chennai ?
I. Suresh look leave on Wednesday.
II. Suresh visited Chennai the day after his mother’s
visit to his house.
III. Suresh’s mother visited Suresh’s house neither on
Monday nor on Thursday.
(1) Only II and III (2) Only I and II (3) Only I & III
(4) All I, II and III are required to answer the question
(5) Question cannot be answered even with all I, II and III.

26. Q.1-5.Each of the questions below consists of a question and two
statements numbered I and II given below it. You have to decide
whether the data provided in the statements are sufficient to answer
the question. Read both the statements and———
Give answer (1) if the data in Statement I alone are
sufficient to answer the question, while the data in Statement II
alone are not sufficient to answer the question .
Give answer (2) if the data in Statement II alone are
sufficient to answer the question, while the data in Statement I alone
are not sufficient to answer the question.
Give answer (3) if the data in Statement I alone or in
Statement II alone are sufficient to answer the question.
Give answer (4) if the data in both the Statements I and II
are not sufficient to answer the question.
Give answer (5) if the data in both the Statements I and II
together are necessary to answer the question..
BOB PO 13-03-2011

27. Q.1. In a six storey building (consisting of floors
numbered 1,2,3,4,5 and 6. The ground floor is numbered
1, the floor above it is numbered 2 and so on) the third
floor is unoccupied. The building houses different
people viz. P, Q, R, S and T, each living on a different
floor. On which of the floors does T live ?
I. S lives between the floors on which R and T live.
II. There are two floors between T’s floor and Q’s floor.

28. Q.2. How is ‘see’ written in the code language ?
I. ‘hope to see you’ is written as ‘ 3692’, ‘do you
see that’ is written as ‘1973’.
II. ‘to pray and hope’ is written as ‘0286’ and ‘hope
I do well’ is written as ‘5467’.

29. Q.3. Among five friends A, B, C, D and E sitting around
a circular table and facing the centre, who is
sitting to the immediate left of A ?
I. A sits third to the right of B. D is not an
immediate neighbour of B.
II. B is an immediate neighbour of C.

30. Q.4. Is X the wife of Y?
I. X’s daughter M is the only sister of R. R is the
son of Y.
II. The mother of Y has only one grandson R.

31. Q.5. Among P, Q, R, S and T, which bag is the
lightest ?
I. P is heavier than Q. R is as heavy as Q. T is
lighter than R.
II. S is lighter than Q but heavier than T.

32. Q.1-5.Each of the questions below consists of a question and
two statements. You have to decide whether the data provided
in the statements are sufficient to answer the question. Read
both the statements and ———
Give answer (1)if the data in statement I alone are
sufficient to answer the question, while the data in statement II
alone are not sufficient to answer the question.
Give answer (2)if the data in statement II alone are
sufficient to answer the question, while the data in statement I
alone are not sufficient to answer the question.
Give answer (3)if the data either in statement I alone
or in statement II alone are sufficient to answer the question.
Give answer (4)if the data even in both statements I
and II together are not sufficient to answer the question.
Give answer (5)if the data in both statements I and II
together are necessary to answer the question.
UCO PO 30-01-2011

33. Q.1. Who amongst Shreya, Jyoti, Leena, Pia and
Kajal is the shortest ?
I. Leena is taller than Pia and Pia is taller only
than Shreya.
II. Kajal is taller than Jyoti and Leena. Leena is
taller than Pia. Shreya is not the tallest.

34. Q.2. Is S the mother of M ?
I. M is sister of Q, Q is sister of R and R is
daughter of S.
II. M is daughter of L and L is sister of V.

35. Q.3. Are all the five friends viz. A, B, C, D and E who
are seated around a circular table facing the
centre ?
I. A sits third to the right of D. D faces the centre.
B sits second to the right of A.
II. C sits second to the left of E. E faces the
centre. D sits second to the right of C.

36. Q.4. How is ‘came’ written in the code language ?
I. ‘we came by car’ is written as ‘4 9 2 8’ and ‘can
we buy car’ is written as ‘5 8 0 2’.
II. ‘can car be cheap is written as ‘8 1 5 3’ and
‘came by cheap car’ is written as ‘9 8 4 1’.

37. Q.5.Point A is towards which direction from point B ?
I. If a person walks 5 m towards West from point
A, takes a left turn and walk 5 m again, he
would be 4 m away from point B.
II. Point A is towards the North of point C, point C
is towards the East of point D and point B is
towards the East of point D.