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Question 171

IB Security Assistant 2023• Logical Ability & Reasoning

In a certain code language, ‘BUREAU’ is written as ‘RUBUAE’, and ‘NUMBER’ is written as ‘MUNREB’. How will be ‘DETECT’ be written in that language? 

  1. AOption (a)

    ETEDEC 

  2. BOption (b)

    TEDTCE 

  3. COption (c)

    EDECTC 

  4. DOption (d)

    TCETED

View answer & explanation

Correct answer

Answer: (b)B.

TEDTCE 

Why this answer is correct

The position and positional value of English Alphabets are:

The logic followed here is:

For, ‘BUREAU’ is written as ‘RUBUAE’

For, ‘NUMBER’ is written as ‘MUNREB’

Similarly, 'DETECT' will be written as:

So, 'DETECT' will be written as 'TEDTCE'.

Hence, the correct answer is 'Option 2'.

Question 172

IB Security Assistant 2023• Logical Ability & Reasoning

Select the number from among the given options that can replace the question mark (?) in the following series.

51, 54, 59, ?, 75, 86

  1. AOption (a)

    69

  2. BOption (b)

    64

  3. COption (c)

    66

  4. DOption (d)

    65

View answer & explanation

Correct answer

Answer: (c)C.

66

Why this answer is correct

The logic followed here is:

So, 66 will complete the series.

Hence, the correct answer is 'Option 3'.

Question 173

IB Security Assistant 2023• Logical Ability & Reasoning

Select the number from among the given options that can replace the question mark (?) in the following series.

342, 215, 124, ?, 26, 7

  1. AOption (a)

    67

  2. BOption (b)

    63

  3. COption (c)

    61

  4. DOption (d)

    65

View answer & explanation

Correct answer

Answer: (b)B.

63

Why this answer is correct

The logic followed here is: (Number)3 - 1 = Terms of series.

Hence, the correct answer is 'Option 2'.

Question 174

IB Security Assistant 2023• Logical Ability & Reasoning

Eight friends (A, B, C, D, E, F, G, H) sit around a circular table, all of them facing the centre. Only three people sit between F and E. E sits second to the right of G. B is immediate the neighbour of E but not D. C sits third to the left of D. A sits second, to the right of B. H and C are not immediate neighbours of each other. Who is sitting between D and H, when counted from the right of D?

  1. AOption (a)

    A

  2. BOption (b)

    E

  3. COption (c)

    F

  4. DOption (d)

    G

View answer & explanation

Correct answer

Answer: (d)D.

G

Why this answer is correct

Given: Eight friends - A, B, C, D, E, F, G, H, sitting around a circular table, facing centre.

E sits second to the right of G.

Only three people sit between F and E.

B is immediate the neighbour of E but not D.

A sits second, to the right of B.

Case I:

Case II:

C sits third to the left of D.

H and C are not immediate neighbours of each other.

Case I:

Case II:

Case II, Contradicts H and C are not immediate neighbour of each other.

Hence, Case II becomes false.

So, the final arrangement is:

From Case I, G is sitting between D and H when counted from right of D.

Hence, the correct answer is 'Option 4'.

Question 175

IB Security Assistant 2023• Logical Ability & Reasoning

How many such symbols are there in the following string, each of which is exactly preceded by a letter but NOT followed by a number?

9 D8@7H%Y3G5 D 8 @ 7 H \% Y 3 G 5 9 % 8 # Q 6 R & P T & 6

  1. AOption (a)

    2

  2. BOption (b)

    4

  3. COption (c)

    5

  4. DOption (d)

    3

View answer & explanation

Correct answer

Answer: (a)A.

2

Why this answer is correct

Given: 9 D8@7H%Y3G5 D 8 @ 7 H \% Y 3 G 5 9 % 8 # Q 6 R & P T & 6

Symbols in the following string which are exactly preceded by a letter but NOT followed by a number.

9 $ D 8 @ 7 H % Y 3 G 5 $ 9 % 8 # Q 6 R & P T & 6.

So, there are '2 Symbols' which are preceded by a letter but NOT followed by a number.

Hence, the correct answer is 'Option 1'.

Question 176

IB Security Assistant 2023• Logical Ability & Reasoning

How many such letters are there in the following string, each of which is followed by a number?

8 W H 6 T 8 4 G 9 E R 6 K 5 L Q 7 U P 3

  1. AOption (a)

    7

  2. BOption (b)

    9

  3. COption (c)

    6

  4. DOption (d)

    8

View answer & explanation

Correct answer

Answer: (a)A.

7

Why this answer is correct

Given: 8 W H 6 T 8 4 G 9 E R 6 K 5 L Q 7 U P 3

Letters which are followed by a number:

8 W H 6 T 8 4 G 9 E R 6 K 5 L Q 7 U P 3.

So, we can say the there are '7 letters' in the given string which are followed by number.

Hence, the correct answer is 'Option 1'.

Question 177

IB Security Assistant 2023• Logical Ability & Reasoning

Select the term from the given options that can replace the question mark (?) in the following series.

DFH, EHK, FJN, ?

  1. AOption (a)

    GMR 

  2. BOption (b)

    GLQ 

  3. COption (c)

    GLT 

  4. DOption (d)

    GJN

View answer & explanation

Correct answer

Answer: (b)B.

GLQ 

Why this answer is correct

The position and positional values of English Alphabets are as follows:

The logic followed here is:

Hence, the correct answer is 'Option 2'.

Question 178

IB Security Assistant 2023• Logical Ability & Reasoning

What is the approximate value of the following expression?

198.98 − (98.89 + 9.98) + 9 − 1.89 + 9.09 = ?

  1. AOption (a)

    115 

  2. BOption (b)

    106 

  3. COption (c)

    121 

  4. DOption (d)

    100

View answer & explanation

Correct answer

Answer: (b)B.

106 

Why this answer is correct

BODMAS Rule:

Given: 198.98 − (98.89 + 9.98) + 9 − 1.89 + 9.09 = ? 

Taking approximate values,

⇒199 - (99 + 10) + 9 - 2 + 9 = ?

⇒199 - 109 + 9 - 2 + 9 = ?

Arranging the equation: 

⇒199 + 9 + 9 - 109 - 2 = ?

⇒217 - 109 -2 = ?

⇒108 - 2 = 106.

Hence, the correct answer is 'Option 2'.

Question 179

IB Security Assistant 2023• Logical Ability & Reasoning

Select the option that is related to the third word in the same way as the second word is related to the first word.

Stop : Cease :: Start : ?

  1. AOption (a)

    Set up

  2. BOption (b)

    Endeavour 

  3. COption (c)

    End 

  4. DOption (d)

    Commence

View answer & explanation

Correct answer

Answer: (d)D.

Commence

Why this answer is correct

The logic followed here is:

Logic: Words are synonyms of each other.

  • Stop : Cease → Stop is the synonym of Cease.

Similarly,

  • Start : ? → Start is the synonym of Commence.

Hence, the correct answer is 'Option 4'.

Question 180

IB Security Assistant 2023• Logical Ability & Reasoning

Four words have been given, out of which three are alike in some manner and one is different. Select the one that is different.

Please note that the reasoning for the answer is to be deduced considering the actual meaning of the words and not basis the counting of letters, vowels, consonants or any other such parameters.

  1. AOption (a)

    Female Peacock 

  2. BOption (b)

    Sparrow 

  3. COption (c)

    Hen 

  4. DOption (d)

    Ostrich

View answer & explanation

Correct answer

Answer: (d)D.

Ostrich

Why this answer is correct

The logic followed here is:

  1. Female Peacock: are able to fly.
  2. Sparrow: are able to fly high.

3.Hen: are able fly short distance.

4. Ostrich: are unable to fly, they can run fast as they have long legs.

All are flying birds except 'Ostrich'.

Hence, the correct answer is 'Option 4'.

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