Official Paper

PYST 10: IB Security Assistant (Executive) Official Paper - Logical Ability & Reasoning (Held On: 29 Sept, 2025 Shift 2) (Previous Year Paper)

20 questions · 15 minutes · with answers · free

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Test (20 questions)

1

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 pens are blue.

Some blues are books.

<br>

Conclusions:

(I) Some books are pens.

(II) No books are pens.

  1. ((a))

    Both conclusions (I) and (II) follow.

  2. ((b))

    Only conclusion (II) follows.

  3. ((c))

    Only conclusion (I) follows.

  4. ((d))

    Neither conclusion (I) nor (II) follows.

Show Answer
Answer: ((d))

Neither conclusion (I) nor (II) follows.

The least possible Venn diagram is as follows:

Conclusions:

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

(II) No books are pens.  - False (As their is no direct relation between books and pens, may be it is possible but not definite.Hence, it is false.)

Neither conclusion (I) nor (II) follows.

Hence, the correct answer is "Option 4"

2

What should come in place of the question mark (?) in the given series based on the English alphabetical order?

<br>

U, ?, I, E, A.

  1. ((a))

    O

  2. ((b))

    T

  3. ((c))

    J

  4. ((d))

    M

Show Answer
Answer: ((a))

O

Given : U, ?, I, E, A.

Logic: Reverse order of vowels

U, O, I, E, A

So, the missing vowel is O

Hence, the correct answer is "Option 1"

3

Seven boxes, C, D, E, M, N, O and U, are kept one over the other but not necessarily in the same order. Only one box is kept above O. Only U is kept between O and D. Only N is kept below E. M is kept at one of the positions above C. How many boxes are kept between M and C?

  1. ((a))

    Four

  2. ((b))

    One

  3. ((c))

    Three

  4. ((d))

    Two

Show Answer
Answer: ((c))

Three

Seven boxes, C, D, E, M, N, O and U, are kept one over the other but not necessarily in the same order.

  • Only one box is kept above O.
  • Only U is kept between O and D.
  • Only N is kept below E.
  • M is kept at one of the positions above C

The Final Arrangement is,

Box
M
O
U
D
C
E
N

 

 

 

 

 

 

 

 

 

Hence, the correct answer is "Option 3"

4

In a certain code language,

<br>

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

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

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

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

<br>

How is M related to Q if 'M × N ÷ O - P ÷ Q'?

  1. ((a))

    Paternal grandmother

  2. ((b))

    Maternal grandmother

  3. ((c))

    Mother

  4. ((d))

    Sister

Show Answer
Answer: ((a))

Paternal grandmother

Preparing the family tree diagram by using the following symbols:

qImage651b84836d0b10110262bc38

As per the given information:

Hence, the correct answer is "Option 1"

5

In a certain code language, 'CLAIM' is coded as '76231', 'LAYER' is coded as '53974' and 'CREAM' is coded as '25463'. What is the code for 'Y' in that language?

  1. ((a))

    9

  2. ((b))

    5

  3. ((c))

    7

  4. ((d))

    3

Show Answer
Answer: ((a))

9

Given : 'CLAIM' is coded as '76231', 'LAYER' is coded as '53974' and 'CREAM' is coded as '25463'

The logic follows here, 

Code for Y is 9.

Hence, the correct answer is "Option 1"

6

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 is the letter-cluster pair that 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))

    NK-FG

  2. ((b))

    IF-AW

  3. ((c))

    BY-TP

  4. ((d))

    UR-MI

Show Answer
Answer: ((a))

NK-FG

The logic followed here is:

626a871a13e02eef2fcd3cd5 16564998081491

Hence, the correct answer is "Option 1"

7

Among five people of different ages, P is older than R. L is younger than M. R is older than Y. M is younger than Y. Who is the youngest?

  1. ((a))

    Y

  2. ((b))

    R

  3. ((c))

    M

  4. ((d))

    L

Show Answer
Answer: ((d))

L

Among five people of different ages, P is older than R.

L is younger than M.

R is older than Y.

M is younger than Y.

Final order will be:

L < M < Y < R < P

L is the youngest. 

Hence, the correct answer is "Option 4"

8

Refer to the following letter and symbol series and answer the question that follows.

Counting to be done from left to right only.

<br>

(Left) R L Z T @ $ O D U % W N # * K X V £ Y A & Q P S (Right)

<br>

How many such letters are there that are immediately preceded by a symbol and also immediately followed by another letter?

  1. ((a))

    Three

  2. ((b))

    Four

  3. ((c))

    Five

  4. ((d))

    Six

Show Answer
Answer: ((c))

Five

Given: 

(Left) R L Z T @ $ O D U %W N # * K X V £ Y A & Q P S (Right)

Required Conditions : Symbol - Letter - Letter

(Left) R L Z T @ $ O D U % W N # *** K X** V £ Y A & Q P S (Right)

Hence, the correct answer is "Option 3"

9

Ravi starts from Point A and drives 7 km towards the south. He then takes a right turn, drives 4 km, turns right and drives 10 km. He then takes a right turn and drives 7 km. He takes a final right turn, drives 3 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))

    4 km to the east

  2. ((b))

    4 km to the west

  3. ((c))

    3 km to the east

  4. ((d))

    3 km to the west

Show Answer
Answer: ((d))

3 km to the west

The final Digaram,

  • Ravi starts from Point A and drives 7 km towards the south.
  • He then takes a right turn, drives 4 km, turns right and drives 10 km.
  • He then takes a right turn and drives 7 km.
  • He takes a final right turn, drives 3 km and stops at Point P

Hence, the correct answer is "Option 4"

10

What should come in place of the question mark (?) in the given series based on the English alphabetical order?

<br>

DNY YIT TDO OYJ ?

  1. ((a))

    JTE

  2. ((b))

    JTF

  3. ((c))

    KTE

  4. ((d))

    JSE

Show Answer
Answer: ((a))

JTE

626a871a13e02eef2fcd3cd5 16564998081491

The logic follows here,

Hence, the correct answer is "Option 1"

11

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

<br>

52 64 79 97 118 ?

  1. ((a))

    142

  2. ((b))

    145

  3. ((c))

    150

  4. ((d))

    12

Show Answer
Answer: ((a))

142

The Logic follows here,

The differences are increasing by 3 on every step.12, 15, 18, 21,24.

  • 64 - 52 = 12
  • 79 - 64 = 15
  • 97 - 79 = 18
  • 118 - 97 = 21
  • So, the next difference will be:
  • 21 + 3 = 24
  • 118 + 24 = 142
  • 52 64 79 97 118 142

Hence, the correct answer is "Option 1"

12

Six people, A, B, C, S, T and U, are sitting in a row facing north. Only two people sit to the right of A. Only two people sit between C and A. Only two people sit between S and B. S sits to the immediate right of C. U sits to the immediate right of B. How many people sit between T and U?

  1. ((a))

    Three

  2. ((b))

    Four

  3. ((c))

    Two

  4. ((d))

    One

Show Answer
Answer: ((c))

Two

Six people, A, B, C, S, T and U, are sitting in a row facing north.

  • Only two people sit to the right of A.
  • Only two people sit between C and A.
  • Only two people sit between S and B.
  • S sits to the immediate right of C.
  • U sits to the immediate right of B

The Final Arrangement is, 

Hence, the correct answer is "Option 3"

13

If + means −, − means ×, × means ÷ and ÷ means +, then what will come in place of the question mark (?) in the following equation?

64 + 18 × 6 ÷ 5 − 3 = ?

  1. ((a))

    80

  2. ((b))

    76

  3. ((c))

    85

  4. ((d))

    70

Show Answer
Answer: ((b))

76

Given 64 + 18 × 6 ÷ 5 − 3 = ? 

  • means −, − means ×, × means ÷ and ÷ means +

64 - 18 ÷ 6 + 5 × 3 = ? 

64 + 15 - 3 = ?

64 + 15 - 3 = ?

79 - 3 = ?

Hence, the correct answer is "Option 2"

14

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

(Left) E A # / @ Q # M D N C $ O G ^ # # Y F Q W (Right)

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

  1. ((a))

    Two

  2. ((b))

    Three

  3. ((c))

    One

  4. ((d))

    Four

Show Answer
Answer: ((c))

One

Given: (Left) E A # / @ Q # M D N C $ O G ^ # # Y F Q W (Right)

Required Conditions : Symbol -  Letters -  Symbol

(Left)  E A # / @ Q # M D N C $ O G ^ # # Y F Q W  (Right)

Hence, the correct answer is "Option 3"

15

Each of the digits in the number 6482357 is arranged in descending order from left to right. What will be the sum of the digits which are fifth from the left and fourth from the right in the new number thus formed? 

  1. ((a))

    12

  2. ((b))

    10

  3. ((c))

    9

  4. ((d))

    11

Show Answer
Answer: ((c))

9

Given Number: 6482357

Arrange in descending order: 8765432

Fifth from left = 4, fourth from right = 5

Sum = 4 + 5 = 9

Hence, the correct answer is "Option 3"

16

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

187 175 160 141 117 ?

  1. ((a))

    87

  2. ((b))

    85

  3. ((c))

    89

  4. ((d))

    92

Show Answer
Answer: ((a))

87

The logic follows here, 

Hence, the correct answer is "Option 1"

17

In a certain code language,

A + B means ‘A is the mother of B’,

A – B means ‘A is the brother of B’,

A × B means ‘A is the wife of B’,

A % B means ‘A is the father of B’ and

A # B means ‘A is the daughter of B’.

How is K related to Y if ‘Y % E × L % P – K × G’?

  1. ((a))

    Brother’s daughter

  2. ((b))

    Wife’s mother 

  3. ((c))

    Daughter’s daughter 

  4. ((d))

    Son’s daughter 

Show Answer
Answer: ((c))

Daughter’s daughter 

Preparing the family tree diagram by using the following symbols:

qImage651b84836d0b10110262bc38

 

Hence, the correct answer is "Option 3"

18

A, B, C, D, E, F and G are sitting around a circular table facing the centre. C sits third to the left of A. G sits second to the left of D. Only A sits between E and G. B is not an immediate neighbour of C. How many people sit between A and C when counted from the left of C?

  1. ((a))

    3

  2. ((b))

    2

  3. ((c))

    1

  4. ((d))

    4

Show Answer
Answer: ((a))

3

Given :  A, B, C, D, E, F and G are sitting around a circular table facing the centre.

  • C sits third to the left of A.
  • G sits second to the left of D.
  • Only A sits between E and G.
  • B is not an immediate neighbour of C

 

 

Hence, the correct answer is "Option 1"

19

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. 

Statements:

Some cranes are sticks.

All sticks are balls. 

 

Conclusions:

(I) Some cranes are balls.

(II) All balls are sticks.

  1. ((a))

    Both conclusions (I) and (II) follow. 

  2. ((b))

    Neither conclusion (I) nor (II) follows. 

  3. ((c))

    Only conclusion (II) follows. 

  4. ((d))

    Only conclusion (I) follows. 

Show Answer
Answer: ((d))

Only conclusion (I) follows. 

The least possible Venn diagram is as follows:

Conclusions:

(I) Some cranes are balls.- True (Some cranes are sticks.All sticks are balls. Some cranes are balls is True)

(II) All balls are sticks. - False (All sticks are balls.All balls are sticks is may be possible but not definite Hence, it is false.)

Only conclusion (I) follows. 

Hence, the correct answer is "Option 4"

20

In a certain code language, ‘LOVE’ is coded as ‘2795’ and ‘VOTE’ is coded as ‘7258’. What is the code for ‘T’ in the given code language? 

  1. ((a))

    8

  2. ((b))

    7

  3. ((c))

    2

  4. ((d))

    5

Show Answer
Answer: ((a))

8

Given : ‘LOVE’ is coded as ‘2795’ and ‘VOTE’ is coded as ‘7258’

The logic follows here, 

 

Hence, the correct answer is "Option 1"

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