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Question 641

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

Rakesh ranked 39th from the top and 46th from the bottom in his class. How many students are there in his class?

  1. AOption (a)

    86

  2. BOption (b)

    83

  3. COption (c)

    84

  4. DOption (d)

    85

View answer & explanation

Correct answer

Answer: (c)C.

84

Why this answer is correct

The logic followed here is:

Rank of Rakesh from the top = 39th

Rank of Rakesh from the bottom = 46th

Total number of students = (Rank of a person from the top + Rank of the same person from the bottom) − 1

= (39 + 46) − 1

= 85 − 1

= 84

Hence, the correct answer is "Option 3"

Question 642

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

X is the mother of F. F is the sister of T. U is the father of K. K is the husband of T. How is K related to X?

  1. AOption (a)

    Daughter's husband

  2. BOption (b)

    Brother

  3. COption (c)

    Daughter's son

  4. DOption (d)

    Father

View answer & explanation

Correct answer

Answer: (a)A.

Daughter's husband

Why this answer is correct

The family tree diagram is 

Therefore, K is the husband of T, who is the daughter of X → K is the Daughter's husband of X.

Hence, the correct answer is 'Option 1'.

Question 643

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

Select the option that represents the correct order of the given words as they would appear in an English dictionary.

  1. Roast

  2. Router

  3. Road

  4. Robust

  5. Rope

  1. AOption (a)

    3, 1, 5, 4, 2

  2. BOption (b)

    1, 4, 3, 5, 2

  3. COption (c)

    1, 4, 3, 2, 5

  4. DOption (d)

    3, 1, 4, 5, 2

View answer & explanation

Correct answer

Answer: (d)D.

3, 1, 4, 5, 2

Why this answer is correct

Dictionary order of given words:

  1. Road
  2. Roast
  3. Robust
  4. Rope
  5. Router

The sequence is 3, 1, 4, 5, 2.

Hence, the correct answer is "option 4"

Question 644

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

In a certain code language,

A > B means ‘A is the sister of B’,

A = B means ‘A is the father of B’,

A ! B means ‘A is the wife of B’ and

A − B means ‘A is the son of B’.

How is S related to E if ‘S > C − O = P ! E’?

  1. AOption (a)

    Wife's sister

  2. BOption (b)

    Wife's brother

  3. COption (c)

    Wife's daughter

  4. DOption (d)

    Wife's mother

View answer & explanation

Correct answer

Answer: (a)A.

Wife's sister

Why this answer is correct

Symbol>=!-
MeaningSisterFatherWifeSon

Given: S > C - O = P ! E

The family tree diagram is 

Therefore, S is the sister of P, who is the wife of E . S is the Wife's sister of E.

Hence, the correct answer is 'Option 1'.

Question 645

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

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

FGJ : HAE

KLO : MFJ

  1. AOption (a)

    HMG : JGC

  2. BOption (b)

    FJL : HDH

  3. COption (c)

    MGQ : OAM

  4. DOption (d)

    BMV : DGQ

View answer & explanation

Correct answer

Answer: (d)D.

BMV : DGQ

Why this answer is correct

The logic follows here, 

For FGJ : HAE,

For KLO : MFJ,

Thus, the resulting pair is BMV : DGQ.

Hence, the correct answer is "option 4"

Question 646

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

What should come in place of ‘?’ in the given series?

314 277 244 215 190 169 ?

  1. AOption (a)

    152

  2. BOption (b)

    155

  3. COption (c)

    146

  4. DOption (d)

    149

View answer & explanation

Correct answer

Answer: (a)A.

152

Why this answer is correct

The logic followed here is:

  • 314 − 37 = 277
  • 277 − 33 = 244
  • 244 − 29 = 215
  • 215 − 25 = 190
  • 190 − 21 = 169
  • 169 − 17 = 152

Thus, the missing term in the series is 152.

Hence, the correct answer is 'Option 1';

Question 647

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

What should come in place of ‘?’ in the given series?

118 149 211 242 304 335 ?

  1. AOption (a)

    427

  2. BOption (b)

    387

  3. COption (c)

    397

  4. DOption (d)

    407

View answer & explanation

Correct answer

Answer: (c)C.

397

Why this answer is correct

The logic followed here is:

118 + 31 = 149

149 + 62 = 211

211 + 31 = 242

242 + 62 = 304

304 + 31 = 335

335 + 62 = 397

Thus, the missing term in the series is 397.

Hence, the correct answer is 'Option 3';

Question 648

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

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. AOption (a)

    IN - BK

  2. BOption (b)

    EJ - RG

  3. COption (c)

    WB - PY

  4. DOption (d)

    TY - MV

View answer & explanation

Correct answer

Answer: (b)B.

EJ - RG

Why this answer is correct

The logic followed here is,

IN - BK,

 

EJ - RG,

WB - PY,

TY - MV,

 

Therefore, the letter-cluster pair that is different from the others is EJ - RG.

Hence, the correct answer is 'Option 2'.

Question 649

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

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

  1. AOption (a)

    Two

  2. BOption (b)

    Four

  3. COption (c)

    One

  4. DOption (d)

    Three

View answer & explanation

Correct answer

Answer: (d)D.

Three

Why this answer is correct

The logic followed here is:

Original LetterWRENCHINGLY
Logic−2−2+1−2−2−2+1−2−2−2−2
New LetterUPFLAFJLEJW

The group of letters formed is: U, P, F, L, A, F, J, L, E, J, W.

 

  • The letters that appear exactly twice are F, L, and J.
  • Total number of such letters = 3.

Hence, the correct answer is " Option 4"

Question 650

RRB NTPC 2026• General Intelligence and Reasoning• General Intelligence and Reasoning

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 one that does not belong to that group?

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

  1. AOption (a)

    KF – GA

  2. BOption (b)

    BP – XL

  3. COption (c)

    UC – QY

  4. DOption (d)

    TR – PN

View answer & explanation

Correct answer

Answer: (a)A.

KF – GA

Why this answer is correct

The logic followed here is:

KF - GA,

 

BP - XL,

UC - QY,

TR - PN,

 

Therefore, the letter-cluster pair that is different from the others is KF - GA.

Hence, the correct answer is 'Option 1'.