Official Paper

PYST 11: IB Security Assistant (Executive) Official Paper - Logical Ability & Reasoning (Held On: 29 Sept, 2025 Shift 3) (Previous Year Paper)

20 questions · 15 minutes · with answers · free

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Test (20 questions)

1

What should come in place of the question mark (?) in the given series?

<br>

9 15 45 51 153 159, ?

  1. ((a))

    472

  2. ((b))

    175

  3. ((c))

    182

  4. ((d))

    477

Show Answer
Answer: ((d))

477

The logic follows here, 

Hence, the correct answer is "Option r"

2

Each of P, Q, R, S, T, U and V has an exam on a different day of a week starting from Monday and ending on Sunday of the same week. Q has an exam on Thursday and U has an exam on Saturday. T has an exam immediately before S. P has an exam on one of the days after V. R has an exam immediately after S. How many people have exams between R and P?

  1. ((a))

    4

  2. ((b))

    1

  3. ((c))

    3

  4. ((d))

    2

Show Answer
Answer: ((c))

3

Each of P, Q, R, S, T, U and V has an exam on a different day of a week starting from Monday and ending on Sunday of the same week.

  • Q has an exam on Thursday and U has an exam on Saturday.
  • T has an exam immediately before S.
  • P has an exam on one of the days after V.
  • R has an exam immediately after S

The Final Arrangement is, 

MonT
TueS
WedR
ThuQ
FriV
SatU
SunP

 

Hence, the correct answer is "Option 3"

3

Refer to the given letter, symbol series and answer the question that follows. Counting to be done from left to right only.

<br>

(Left) @ ^ & E V T # F F M L Z K L F D B B A E H (Right)

<br>

How many such symbols are there, each of which is immediately preceded by a letter and also immediately followed by a letter?

  1. ((a))

    Two

  2. ((b))

    Three

  3. ((c))

    One

  4. ((d))

    Four

Show Answer
Answer: ((c))

One

Given Series :  (Left) @ ^ & E V T # F F M L Z K L F D B B A E H (Right)

Required Conditions :  Letter, Symbol, Letter

(Left) @ ^ & E V T # F F M L Z K L F D B B A E H (Right)

Hence, the correct answer is "Option 3"

4

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

<br>

Statements:

All crows are sparrows.

No crow is a peacock.

<br>

Conclusions:

(I) No sparrow is a peacock.

(II) Some peacocks are crows.

  1. ((a))

    Only conclusion (I) follows.

  2. ((b))

    Neither conclusion (I) nor (II) follows.

  3. ((c))

    Both conclusions (I) and (II) follow.

  4. ((d))

    Only conclusion (II) follows.

Show Answer
Answer: ((b))

Neither conclusion (I) nor (II) follows.

The least possible Venn diagram is as follows:

 

Conclusions:

(I) No sparrow is a peacock.- False (As their is no direct relation between sparrow and peacock,may be it is possible but not definite Hence, it is False).

(II) Some peacocks are crows.- False (As their is no direct relation between crows and peacock,may be it is possible but not definite Hence, it is False).

Neither conclusion (I) nor (II) follows.

Hence, the correct answer is "Option 2"

5

In a certain code language, 'DEAL' is coded as '7298' and 'APEL' is coded as '2678'.

What is the code for 'P' in the given code language?

  1. ((a))

    2

  2. ((b))

    7

  3. ((c))

    8

  4. ((d))

    6

Show Answer
Answer: ((d))

6

'DEAL' is coded as '7298' and 'APEL' is coded as '2678'

'D E A L' - '7 2 9 8'

'A P E L' - '2 6 7 8'

Code for P is 6.

Hence, the correct answer is "Option 4"

6

What should come in place of the question mark (?) in the given series?

<br>

6 16 28 60 116 ?

  1. ((a))

    237

  2. ((b))

    235

  3. ((c))

    234

  4. ((d))

    236

Show Answer
Answer: ((d))

236

The logic follows here, 

  • 6 \times 2 + 4 = 16

6 × 2 + 4 = 16

<br>
  • 16 \times 2 - 4 = 28

16 × 2 − 4 = 28

<br>
  • 28 \times 2 + 4 = 60

28 × 2 + 4 = 60

  • 60 × 2 − 4 = 116
  • 116 × 2 + 4 = 236

Hence, the correct answer is "Option 4"

7

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group?

(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. ((a))

    PN - TK

  2. ((b))

    OQ - SL

  3. ((c))

    GA - KV

  4. ((d))

    WG - AB

Show Answer
Answer: ((a))

PN - TK

alpha teb

The pattern followed here is:

Hence, the correct answer is "Option 1"

8

Select the set in which the numbers are related in the same way as are the numbers of the following sets.

<br>

(NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 - Operations on 13 such as adding to/subtracting from/multiplying with 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

<br>

(18, 28, 252)

(16, 30, 240)

  1. ((a))

    (14, 22, 308)

  2. ((b))

    (30, 18, 280)

  3. ((c))

    (24, 12, 144)

  4. ((d))

    (26, 14, 264)

Show Answer
Answer: ((c))

(24, 12, 144)

The Logic follows here, 

Third number = (First number × Second number) / 2

  • 18 × 28 = 504

504 ÷ 2 = 252

  • 16 × 30 = 480

480 ÷ 2 = 240

​ Similarly,

(24, 12, 144)

  • 24 x 12 = 288
  • 288 ÷ 2 = 144.

Hence, the correct answer is "Option "

9

A, B, C, D, J, K, and L are sitting around a circular table facing the center.

K is sitting to the immediate right of B. Counting from the left of K, only three people sit between K and A. Only three people sit between B and L. C is sitting to the immediate right of D.

Counting from the left of D, how many people sit between J and D?

  1. ((a))

    Four

  2. ((b))

    Three

  3. ((c))

    Two

  4. ((d))

    One

Show Answer
Answer: ((c))

Two

Given: A, B, C, D, J, K, and L are sitting around a circular table facing the center.

  • K is sitting to the immediate right of B.
  • Counting from the left of K, only three people sit between K and A

Only three people sit between B and L.

C is sitting to the immediate right of D.

The Final Arrangement is,

Hence, the correct answer is "Option 3"

10

Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster DOES NOT belong to that group?

<br>

(Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)

  1. ((a))

    VXY

  2. ((b))

    QST

  3. ((c))

    LOQ

  4. ((d))

    GIJ

Show Answer
Answer: ((c))

LOQ

alpha teb

The pattern followed here is:

Hence, the correct answer is "Option 3"

11

Seven people, A, B, C, D, E, F and G, are sitting in a row, facing north. Only two people sit to the left of A. Only three people sit between A and F. D sits second to the right of A. Only two people sit between D and G. C sits at some place to the right of B but at some place to the left of E. Who sits on the extreme left end?

  1. ((a))

    F

  2. ((b))

    B

  3. ((c))

    C

  4. ((d))

    E

Show Answer
Answer: ((b))

B

Seven people, A, B, C, D, E, F and G, are sitting in a row, facing north.

  • Only two people sit to the left of A.
  • Only three people sit between A and F.
  • D sits second to the right of A.
  • Only two people sit between D and G.
  • C sits at some place to the right of B but at some place to the left of E

The Final Arrangement is,

Hence, the correct answer is "Option B"

12

If 'A' stands for '÷', 'B' stands for 'x', 'C' stands for '+' and 'D' stands for '-', then what will come in place of the question mark (?) in the following equation?

<br>

23 B 4 D 63 A 3 C 14 = ?

  1. ((a))

    96

  2. ((b))

    86

  3. ((c))

    85

  4. ((d))

    65

Show Answer
Answer: ((c))

85

Given :  23 B 4 D 63 A 3 C 14 = ?

'A' stands for '÷', 'B' stands for 'x', 'C' stands for '+' and 'D' stands for '-'

23 x 4 - 63 ÷ 3 + 14 = ?

92 - 21 + 14 = ?

92 + 14 - 21  = ?

106 - 21  = ?

Hence, the correct answer is "Option 3"

13

Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statements.

<br>

Statements:

All bats are ears.

All ruffles are ears.

<br>

Conclusions:

(I) Some bats are ruffles.

(II) Some ears are ruffles.

  1. ((a))

    Only conclusion (II) follows.

  2. ((b))

    Only conclusion (I) follows.

  3. ((c))

    Neither conclusion (I) nor (II) follows.

  4. ((d))

    Both conclusions (I) and (II) follow.

Show Answer
Answer: ((a))

Only conclusion (II) follows.

The least possible Venn diagram is as follows:

Conclusions:

(I) Some bats are ruffles.- False (As their is no direct relation between bats and ruffles  may be it is possible but not definite. Hence, it is false)

(II) Some ears are ruffles.- True (All ruffles are ears.Some ruffles are ears. Some ears are ruffles is True)

Only conclusion (II) follows.

Hence, the correct answer is "Option 1"

14

In a certain code language,

A = B means 'A is the sister of B',

A $ B means 'A is the brother of B',

A@B means 'A is the wife of B',

and A * B means 'A is the father of B'.

<br>

How is A related to K if 'A $ R = F *B @ K'?

  1. ((a))

    Father's brother

  2. ((b))

    Wife's father's brother

  3. ((c))

    Wife's brother

  4. ((d))

    Wife's father

Show Answer
Answer: ((b))

Wife's father's brother

Preparing the family tree diagram by using the following symbols:

qImage651b84836d0b10110262bc38

Hence, the correct answer is "Option 2"

15

In a certain code language,

A + B means 'A is the sister of B',

A@B means 'A is the brother of B',

A# B means 'A is the wife of B',

and A ÷ B means 'A is the father of B'.

<br>

How is W related to U if 'W+E÷R@H#U'?

  1. ((a))

    Wife's sister

  2. ((b))

    Wife's father's mother

  3. ((c))

    Wife's father's sister

  4. ((d))

    Wife's mother

Show Answer
Answer: ((c))

Wife's father's sister

Preparing the family tree diagram by using the following symbols:

qImage651b84836d0b10110262bc38

Hence, the correct answer is "Option 3"

16

Each of P, Q, R, S, T, U and V has an exam on a different day of a week, starting from Monday and ending on Sunday of the same week. U has an exam on Friday. Only 2 people have exams between U and R. V has an exam immediately before Q and T has an exam immediately after S. Only 2 people have exams between P and Q. Who has an exam on Sunday?

  1. ((a))

    V

  2. ((b))

    P

  3. ((c))

    Q

  4. ((d))

    T

Show Answer
Answer: ((d))

T

Each of P, Q, R, S, T, U and V has an exam on a different day of a week, starting from Monday and ending on Sunday of the same week.

  • U has an exam on Friday.
  • Only 2 people have exams between U and R.
  • V has an exam immediately before Q and T has an exam immediately after S.
  • Only 2 people have exams between P and Q

The Final Arrangement is, 

MonP
TueR
WedV
ThuQ
FriU
SatS
SunT

 

Hence, the correct answer is "Option 4"

17

Refer to the following number series and answer the question below it (all numbers are single-digit numbers only). Counting should be done from left to right only.

<br>

(Left) 5 8 3 1 7 0 4 6 2 9 5 3 8 1 7 4 0 2 6 9 3 5 1 8 7 (Right)

<br>

What is the difference between the squares of the fourth number from the left and the third number from the right?

  1. ((a))

    5

  2. ((b))

    0

  3. ((c))

    8

  4. ((d))

    6

Show Answer
Answer: ((b))

0

The logic follows here, 

(बायें) 5 8 3 1 7 0 4 6 2 9 5 3 8 1 7 4 0 2 6 9 3 5 1 8 7 (दायें)

Squares of the fourth number from the left - 12

Third number from the right- 1

Difference between the squares of the fourth number from the left and the third number from the right = 1 - 1 = 0

Hence, the correct answer is "Option 2"

18

Virat starts from Point A and drives 8 km towards the north. He then takes a right turn, drives 6 km, turns right and drives 13 km. He then takes a right turn and drives 8 km. He takes a final right turn, drives 5 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are 90-degree turns only unless specified.)

  1. ((a))

    3 km to the west

  2. ((b))

    2 km to the west

  3. ((c))

    2 km to the east

  4. ((d))

    3 km to the east

Show Answer
Answer: ((c))

2 km to the east

  • Virat starts from Point A and drives 8 km towards the north.
  • He then takes a right turn, drives 6 km, turns right and drives 13 km.
  • He then takes a right turn and drives 8 km.
  • He takes a final right turn, drives 5 km and stops at Point P

 

The Final Diagram, 

Hence, the correct answer is "Option 3"

19

In a certain code language, 'MONK' is coded as '8231' and 'MOAN' is coded as '3528'.

How is 'A' coded in that language?

  1. ((a))

    2

  2. ((b))

    3

  3. ((c))

    5

  4. ((d))

    1

Show Answer
Answer: ((c))

5

The logic follows here,

'M O N K' -  '8 2 3 1' 

'M O A N'-  '3 5 2 8'.

The Code for A is 5.

Hence, the correct answer is "Option 3"

20

Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.) 

  1. ((a))

    QS - VX

  2. ((b))

    SU - XZ

  3. ((c))

     DF - IK

  4. ((d))

    LN - PS

Show Answer
Answer: ((d))

LN - PS

alpha teb

The pattern followed here is:

Hence, the correct answer is "Option 4"

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