Official Paper

PYST 9: IB Security Assistant (Executive) Official Paper - Logical Ability & Reasoning (Held On: 29 Sept, 2025 Shift 1) (Previous Year Paper)

20 questions · 15 minutes · with answers · free

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Test (20 questions)

1

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

(Left) GU * MB+£LQCT% @HODK> XZ F # & Y (Right)

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

  1. ((a))

    Four

  2. ((b))

    One

  3. ((c))

    Two

  4. ((d))

    Three

Show Answer
Answer: ((d))

Three

Given (Left) GU * MB+£LQCT% @HODK> XZ F # & Y (Right)

Required Conditions :  Letter - Symbol - Symbol

(Left) GU * M**B+£LQCT% @**HODK> XZ F # & Y (Right)

Hence, the correct answer is "Option 4"

2

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

  1. ((a))

    SX-TS

  2. ((b))

    YD-ZY

  3. ((c))

    TY-UT

  4. ((d))

    KI-LP

Show Answer
Answer: ((d))

KI-LP

The logic followed here is:

626a871a13e02eef2fcd3cd5 16564998081491

Hence, the correct answer is "Option 4"

3

In a certain code language, 'UBER' is coded as '4723' and 'BEIR' is coded as '2478'. What is the code for 'I' in the given code language?

  1. ((a))

    4

  2. ((b))

    8

  3. ((c))

    7

  4. ((d))

    2

Show Answer
Answer: ((b))

8

Given 'UBER' is coded as '4723' and 'BEIR' is coded as '2478'.

'U B E R ' - ' 4 7 2 3' 

'B E I R' -  '2 4 7 8'.

 code for 'I'  is 8.

Hence, the correct answer is "Option 2"

4

R starts from Point A and drives 2 km towards the south. He then takes a left turn, drives 7 km, turns left and drives 6 km. He then takes a left turn and drives 14 km. He takes a final left turn, drives 4 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))

    6 km to the north

  2. ((b))

    3 km to the west

  3. ((c))

    4 km to the south

  4. ((d))

    7 km to the east

Show Answer
Answer: ((d))

7 km to the east

  • R starts from Point A and drives 2 km towards the south.
  • He then takes a left turn, drives 7 km, turns left and drives 6 km.
  • He then takes a left turn and drives 14 km.
  • He takes a final left turn, drives 4 km and stops at Point P.

The Final Diagram, 

Hence, the correct answer is "Option 4"

5

Seven boxes, A, B, C, M, N, O and T, are kept one over the other but not necessarily in the same order. Only two boxes are kept below N. Only three boxes are kept between N and A. Only B is kept below C. O is kept at one of the positions above T and at one of the positions below M. How many boxes are kept between M and T?

  1. ((a))

    Two

  2. ((b))

    Three

  3. ((c))

    One

  4. ((d))

    Four

Show Answer
Answer: ((c))

One

Seven boxes, A, B, C, M, N, O and T, are kept one over the other but not necessarily in the same order.

  • Only two boxes are kept below N.
  • Only three boxes are kept between N and A.
  • Only B is kept below C.
  • O is kept at one of the positions above T and at one of the positions below M

 

The Final Arrangement is , 

A
M
O
T
N
C
B

 

Hence, the correct answer is "Option 3"

6

If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’, what will come in place of the question mark (?) in the following equation?

23 B 4 D 45 A 9 C 11 = ?

  1. ((a))

    98

  2. ((b))

    90

  3. ((c))

    75

  4. ((d))

    85

Show Answer
Answer: ((a))

98

Given Series : 23 B 4 D 45 A 9 C 11 = ?

‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’

BODMAS

23 x 4 - 45 ÷ 9 + 11 = ?

23 x 4 - 5 + 11 = ?

92  + 11 - 5 = ?

103 - 5 = ?

Hence, the correct answer is "Option 1"

7

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 crows are eagles.

Some eagles are herons.

Conclusions:

(I): Some crows are herons.

(II): All herons are eagles.

  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 shown below.

Conclusions:

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

(II): All herons are eagles.  - False ( Some eagles are herons.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"

8

In a certain code language,

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

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

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

and A & B means 'A is the sister of B'.

How is B related to W if 'B @F+R & H# W'?

  1. ((a))

    Daughter's husband's father

  2. ((b))

    Daughter's husband's brother

  3. ((c))

    Daughter's husband

  4. ((d))

    Daughter's son

Show Answer
Answer: ((c))

Daughter's husband

Preparing the family tree diagram by using the following symbols:

qImage651b84836d0b10110262bc38

As per the given information:

A is
Symbol#@+&
MeansdaughterFatherSonSister
of B

 

Hence, the correct answer is "Option 3"

9

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

Only one person sits between C and F when counted from the right of C. Only one person sits between F and E. Only one person sits between C and D. Only two people sit between G and E. Only one person sits between B and D. How many people sit between D and F when counted from the right of F?

  1. ((a))

    2

  2. ((b))

    3

  3. ((c))

    1

  4. ((d))

    4

Show Answer
Answer: ((a))

2

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

Only one person sits between C and F when counted from the right of C.

  • Only one person sits between F and E.
  • Only one person sits between C and D.
  • Only two people sit between G and E.
  • Only one person sits between B and D

The Final Arrangement is , 

Hence, the correct answer is "Option 1"

10

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))

    HF - CA

  2. ((b))

    QO-LJ

  3. ((c))

    LJ - GE

  4. ((d))

    KL - PO

Show Answer
Answer: ((d))

KL - PO

The logic followed here is:

626a871a13e02eef2fcd3cd5 16564998081491

Hence, the correct answer is "Option 4"

11

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

16,25,43,70,106 ?

  1. ((a))

    155

  2. ((b))

    153

  3. ((c))

    149

  4. ((d))

    151

Show Answer
Answer: ((d))

151

Logic: Diffrences are increasing by +9 each time: +9, +18, +27, +36,.....

25 - 16 = 9

43 - 25 = 18

70 - 43 = 27

106 - 70 = 36

Next: 36 + 9 = 45

106 + 45 = 151

Hence, the correct answer is "Option 4"

12

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'.

How is W related to U if 'W@E+R÷H#U'?

  1. ((a))

    Wife's father's brother

  2. ((b))

    Wife's brother

  3. ((c))

    Wife's father

  4. ((d))

    Wife's father's father

Show Answer
Answer: ((a))

Wife's father's brother

Common Diagram 28.01.2020 D3

Given : 

A is
Symbol+@#÷
MeaningSisterBrotherWifeFather
to B

 

'W@E+R÷H#U'

Hence, the correct answer is "Option 1"

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.

Statements:

No hills are mountains.

Some mountains are valleys.

All valleys are glaciers.

Conclusions:

(I) No hills are valleys.

(II) Some mountains are glaciers.

  1. ((a))

    Neither conclusion (I) nor (II) follows.

  2. ((b))

    Both conclusions (I) and (II) follow.

  3. ((c))

    Only conclusion (I) follows.

  4. ((d))

    Only conclusion (II) follows.

Show Answer
Answer: ((d))

Only conclusion (II) follows.

The least possible Venn diagram for the given statements is as shown below :

 

Conclusions:

(I) No hills are valleys. - False ( Their is no direct relation between hills and valleys may be possible but not definite. Hence, it is false)

(II) Some mountains are glaciers.- True (Some mountains are valleys.All valleys are glaciers.Some mountains are glaciers is True)

Only conclusion (II) follows.

Hence, the correct answer is "Option 4".

14

In a certain code language, 'are you here' is written as 'yg ko ws' and 'you were right' is coded as 'ws hj lk'. How is 'you' coded in that language?

  1. ((a))

    lk

  2. ((b))

    ws

  3. ((c))

    hj

  4. ((d))

    ko

Show Answer
Answer: ((b))

ws

The logic follows here, 

Hence, the correct answer is "Option 2"

15

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

4 13 25 76 151 ?

  1. ((a))

    454

  2. ((b))

    445

  3. ((c))

    435

  4. ((d))

    473

Show Answer
Answer: ((a))

454

The logic follows here, 

The pattern alternates between ×3 +1 and ×2 −1

4 × 3 + 1 = 13

13 × 2 − 1 = 25

25 × 3 + 1 = 76

76 × 2 − 1 = 151

Next should follow ×3 +1

151 × 3 + 1 = 454

Hence, the correct answer is "Option 1"

16

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

D sits third to the left of L. A sits second to the left of K. L is an immediate neighbour of both B and A. C is not an immediate neighbour of D.

How many people sit between J and A when counted from the right of J?

  1. ((a))

    Three

  2. ((b))

    One

  3. ((c))

    Two

  4. ((d))

    Four

Show Answer
Answer: ((c))

Two

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

  • D sits third to the left of L.
  • A sits second to the left of K.
  • L is an immediate neighbour of both B and A.
  • C is not an immediate neighbour of D.

 

The Final Arrangement is , 

Hence, the correct answer is "Option 3"

17

RX 2 is related to TT -7 in a certain way. In the same way, MQ 9 is related to OM 0. To which of the following is NV 15 related, following the same logic?

  1. ((a))

    QR 8

  2. ((b))

    PR 6

  3. ((c))

    PQ 8

  4. ((d))

    QQ 6

Show Answer
Answer: ((b))

PR 6

The logic followed here is:

626a871a13e02eef2fcd3cd5 16564998081491

Hence, the correct answer is "Option 2"

18

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

(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.)

(11,18,396)

(19,12,456)

  1. ((a))

    (13,14,364)

  2. ((b))

    (15,11,380)

  3. ((c))

    (17,13,441)

  4. ((d))

    (16,10,330)

Show Answer
Answer: ((a))

(13,14,364)

Logic : 2 x First Number x Second Number =  Third Number

For (11, 18, 396):

 2 × 11 × 18 =  396

 

For (19, 12, 456):

 2 × 19 × 12 = 456

Similarly,

(13,14,364)

2 ×  13 × 14 = 364

Hence, the correct answer is "Option 1"

19

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

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

How many of the numbers are perfect squares?

  1. ((a))

    Eight

  2. ((b))

    Five

  3. ((c))

    Twelve

  4. ((d))

    Ten

Show Answer
Answer: ((a))

Eight

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

Required Conditions :  perfect squares

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

Hence, the correct answer is "Option 1"

20

A, B, C, D and E have different ages. C is older than B but younger than D. Only one person is younger than A. B is not the youngest. Who amongst them is the second oldest?

  1. ((a))

    D

  2. ((b))

    B

  3. ((c))

    C

  4. ((d))

    A

Show Answer
Answer: ((c))

C

A, B, C, D and E have different ages. C is older than B but younger than D. Only one person is younger than A. B is not the youngest.

Hence, the correct answer is "Option 3"

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