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Question 521

RRB Technician 2026• General Intelligence & Reasoning

In a certain code language,

A + B means ‘A is the sister of B’

A – B means ‘A is the brother of B’

A x B means ‘A is the wife of B’

A ÷ B means ‘A is the father of B’

Based on the above, how is M related to R if ‘M – K + L ÷ P x R’?

  1. AOption (a)

    Wife's father

  2. BOption (b)

    Wife's father's brother

  3. COption (c)

    Wife's father's father

  4. DOption (d)

    Wife's brother

View answer & explanation

Correct answer

Answer: (b)B.

Wife's father's brother

Why this answer is correct

Given:

Let us first decode the given symbols and then draw a family tree.

A is
Symbol+−×÷
MeaningSisterBrotherWifeFather
of B

 

On checking the expression: M − K + L ÷ P × R

  1. M − K - 'M − K' means M is the brother of K.

  2. K + L - 'K + L' means K is the sister of L.

  3. L ÷ P - 'L ÷ P' means L is the father of P.

  4. P × R - 'P × R' means P is the wife of R.

​Based on the tree, L is the father of R's wife P, and M is the brother of L. Therefore, M is the Wife's father's brother of R.

Hence, the correct answer is 'Option 2'.

Question 522

RRB Technician 2026• General Intelligence & Reasoning

In a certain code language, ‘PICK’ is coded as ‘2384’ and ‘SKIP’ is coded as ‘4638’. What is the code for ‘S’ in that language?

  1. AOption (a)

    3

  2. BOption (b)

    8

  3. COption (c)

    6

  4. DOption (d)

    2

View answer & explanation

Correct answer

Answer: (c)C.

6

Why this answer is correct

Logic followed here is by comparing the letters of the words and their corresponding codes to identify the specific code for each letter through the process of elimination.

Given:

PICK is coded as '2384'

SKIP is coded as '4638'

Therefore, the code for the letter S is 6.

Hence, the correct answer is "Option 3".

Question 523

RRB Technician 2026• General Intelligence & Reasoning

Each vowel in the word THALERS is changed to the letter immediately following it in the English alphabetical order and each consonant is changed to the letter immediately preceding it in the English alphabetical order. How many letters will appear exactly twice in the group of letters thus formed?

  1. AOption (a)

    3

  2. BOption (b)

    0

  3. COption (c)

    2

  4. DOption (d)

    1

View answer & explanation

Correct answer

Answer: (b)B.

0

Why this answer is correct

Given Word:

THALERS

Rule:

  • Each vowel is changed to the next letter in the English alphabet.
  • Each consonant is changed to the previous letter in the English alphabet.

Transformation:

Original LetterTypeNew Letter
TConsonantS
HConsonantG
AVowelB
LConsonantK
EVowelF
RConsonantQ
SConsonantR

New group of letters:

S, G, B, K, F, Q, R

Every letter appears only once.

Therefore, the number of letters appearing exactly twice = 0.

Hence, the correct answer is "Option 2".

Question 524

RRB Technician 2026• General Intelligence & Reasoning

S is the daughter of E. E is the wife of L. N is the mother of K. N is the sister of L. How is S related to K?

  1. AOption (a)

    Mother's brother's daughter

  2. BOption (b)

    Mother's brother's wife

  3. COption (c)

    Brother's daughter

  4. DOption (d)

    Brother's wife

View answer & explanation

Correct answer

Answer: (a)A.

Mother's brother's daughter

Why this answer is correct

Given:

Let us first represent the relationships between the family members using the symbols below to draw a family tree.

SymbolMeaning
RectangleMale
CircleFemale
Horizontal Double LineMarried Couple
Horizontal Single LineSiblings
Vertical LineGeneration Gap

 

Based on the information provided:

  1. S is the daughter of E - This means S is a female in the generation below E.

  2. E is the wife of L - This means E is female and L is male, and they are a married couple. Consequently, L is the father of S.

  3. N is the sister of L - This establishes N (female) as L's sibling.

  4. N is the mother of K - This means K is in the generation below N.

Therefore, L is the brother of K's mother (N). S is the daughter of L. This makes S the Mother's brother's daughter of K.

Hence, the correct answer is 'Option 1'.

Question 525

RRB Technician 2026• General Intelligence & Reasoning

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/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)

(6, 18, 14)

(8, 20, 16)

  1. AOption (a)

    (9, 21, 25)

  2. BOption (b)

    (12, 28,24)

  3. COption (c)

    (14, 26, 30)

  4. DOption (d)

    (13, 25, 21)

View answer & explanation

Correct answer

Answer: (d)D.

(13, 25, 21)

Why this answer is correct

The logic followed here is:

Logic: Second Number = First Number + 12; Third Number = First Number + 8

For the first set (6, 18, 14):

⇒ 6 + 12 = 18

⇒ 6 + 8 = 14

For the second set (8, 20, 16):

⇒ 8 + 12 = 20

⇒ 8 + 8 = 16

Applying the same logic to Option 4:

For the set (13, 25, 21):

⇒ 13 + 12 = 25

⇒ 13 + 8 = 21

Hence, the correct answer is 'Option 4'.

Question 526

RRB Technician 2026• General Intelligence & Reasoning

In a certain code language,

A # B means ‘A is the sister of B’,

A + B means ‘A is the son of B’,

A ÷ B means ‘A is the wife of B’,

and A @ B means ‘A is the father of B’.

How is A related to T if ‘A + B # H @ K ÷ T’?

  1. AOption (a)

    Wife's father's sister's son

  2. BOption (b)

    Wife's father's sister's husband

  3. COption (c)

    Wife's father

  4. DOption (d)

    Wife's brother

View answer & explanation

Correct answer

Answer: (a)A.

Wife's father's sister's son

Why this answer is correct

Given:

Let us first decode the given symbols and then draw a family tree.

A is
Symbol#+÷@
MeaningSisterSonWifeFather
of B

 

On checking the expression: A + B # H @ K ÷ T

  1. A + B - 'A + B' means 'A is the son of B'.

  2. B # H - 'B # H' means 'B is the sister of H'.

  3. H @ K - 'H @ K' means 'H is the father of K'.

  4. K ÷ T - 'K ÷ T' means 'K is the wife of T'.

Based on the family tree:

  • T is the husband of K.
  • K's father is H.
  • H's sister is B.
  • B's son is A.

Therefore, A is the Wife's father's sister's son of T.

Hence, the correct answer is "Option 1".

Question 527

RRB Technician 2026• General Intelligence & Reasoning

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

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

How many such odd digits are there, each of the which is immediately preceded by an even digit and immediately followed by an even digit?

  1. AOption (a)

    One

  2. BOption (b)

    Four

  3. COption (c)

    Three

  4. DOption (d)

    Two

View answer & explanation

Correct answer

Answer: (c)C.

Three

Why this answer is correct

Given Series:

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

Required pattern:

Even Digit → Odd Digit → Even Digit

Checking the series:

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

Odd digits satisfying the condition:

→ 9 in (2 9 4)

→ 1 in (4 1 6)

→ 5 in (8 5 4)

Therefore, there are 3 such odd digits.

Hence, the correct answer is "Option 3 — Three".

Question 528

RRB Technician 2026• General Intelligence & Reasoning

What will come in the place of ‘?’ in the following equation, if ‘+’ and ‘-’ are interchanged and ‘x’ and ‘÷’ are interchanged?

4 ÷ 2 + 12 x 4 - 3 = ?

  1. AOption (a)

    4

  2. BOption (b)

    8

  3. COption (c)

    6

  4. DOption (d)

    9

View answer & explanation

Correct answer

Answer: (b)B.

8

Why this answer is correct

Given sign interchanges:

Original SignInterchanged Sign
÷×
+−
×÷
−+

 

Applying the interchanges to the given equation:

Original equation: 4 ÷ 2 + 12 × 4 − 3 = ?

After interchanging the signs, the new equation is:

= 4 × 2 − 12 ÷ 4 + 3 

= 4 × 2 - 3 + 3

= 8 - 3 + 3

= 8 

Therefore, the value that will come in place of '?' is 8.

Hence, the correct answer is "Option 2".

Question 529

RRB Technician 2026• General Intelligence & Reasoning

Select the pair which follows the same pattern as that followed by the two set of pairs given below. Both pairs follow the same pattern.

HDF−DZB

GCE−CYA

  1. AOption (a)

    UQS−QMO

  2. BOption (b)

    UQS−PMN

  3. COption (c)

    UPQ−QMO

  4. DOption (d)

    UPQ−PLN

View answer & explanation

Correct answer

Answer: (a)A.

UQS−QMO

Why this answer is correct

The logic followed in this pattern is a subtraction of 4 from the positional value of each letter in the alphabet.

For 'HDF' related to 'DZB':

H(8)D(4)F(6)
−4 ↓−4 ↓−4 ↓
D(4)Z(26)B(2)

For 'GCE' related to 'CYA':

G(7)C(3)E(5)
−4 ↓−4 ↓−4 ↓
C(3)Y(25)A(1)

Applying the same logic to the options, only 'UQS' to 'QMO' matches:

U(21)Q(17)S(19)
−4 ↓−4 ↓−4 ↓
Q(17)M(13)O(15)

Thus, UQS is related to QMO in the same way as the given pairs.

Hence, the correct answer is 'Option 1'.

Question 530

RRB Technician 2026• General Intelligence & Reasoning

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

(Left) E Z J K A R T S W H M F U C N P D K I E N O A K (Right)

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

  1. AOption (a)

    3

  2. BOption (b)

    1

  3. COption (c)

    4

  4. DOption (d)

    2

View answer & explanation

Correct answer

Answer: (d)D.

2

Why this answer is correct

Given Series:

(Left) E Z J K A R T S W H M F U C N P D K I E N O A K (Right)

Required pattern:

Consonant → Vowel → Consonant

Checking the series:

(Left) E Z J K A R T S W H M F F U C C N P D K K I E E N O A A K (Right)

Vowels satisfying the condition:

→ U in (F U C)

→ O in (N O A)

Therefore, there are 2 such vowels.

Hence, the correct answer is "Option 4 — 2".

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