RRB NTPC Graduate CBT 3 (Practice Quiz 1) β Full Exercise With Quick Tricks And Step-by-step Solutions (Part 2: Question 26-50)
This is a mock test series of RRB NTPC CBT Shift 3 Exam, we are doing the practice test 1. Are you a pioneer who is preparing for the competitive exams? If yes then all exams here are completely free. There are no hidden charges. We even provide rewards if you perform well to motivate you in your study. Here you will try to attempt RRB NTPC Graduate CBT 3 exam practice test 1. The competitive exam is divided into 4 parts each with 25 questions. This is not just a test but also learning ground where you learn from solutions, tricks, and answers.
Exam Instructions
- Total Questions: 25 (This is Part 2 of Total 100 Questions.)
- Attempt like real exam (no scrolling to answers immediately π)
- Each question includes:
- β Correct Answer
- π§ Shortcut Trick
- β Why other options are wrong
Solution and Tricks of RRB NTPC Competitive Exam Test Series Part 2
Question 26
Seven friends A, B, C, D, E, F and G sit in a row facing north.
A sits immediately left of B.
C sits immediately left of A.
D sits immediately right of B.
E sits immediately right of D.
F sits immediately left of G.
If G is at the extreme right, who sits third to the left of G?
A. A
B. B
C. C
D. D
Solution
Build the row step by step:
A sits immediately left of B β A B
C sits immediately left of A β C A B
D sits immediately right of B β C A B D
E sits immediately right of D β C A B D E
F sits immediately left of G, and G is at the extreme right β F G at the end
So the full row is:
C A B D E F G
Now count third to the left of G:
1st left of G = F
2nd left of G = E
3rd left of G = D
Quick trick: Build the row in one chain, then count from the end.
Correct answer: D. D
Question 27
Three groups of visitors ate at the same restaurant. Group X has 60 members with an average bill of βΉ420 each, group Y has 25 members with an average bill of βΉ380 each, and group Z has 15 members with an average bill of βΉ500 each. What is the overall average bill per member?
A. βΉ420
B. βΉ422
C. βΉ424
D. βΉ426
Weighted Average
Formula:
Use weighted average:
Overall average =
β= 422
Quick trick: Total members = 100, so the average becomes easy.
Correct answer: B. 422
π Trick: Never average averages β use weighted average.
Shortcut:
Divide by 5 once: 60, 25, 15
We’ll get: 12, 5, 3
12 + 5 + 3 = 20
Divide by 10: 420, 380, 500
We’ll get: 42, 38, 50
Let’s multiply now:
12 Γ 42 + 5 Γ 38 + 3 Γ 50 = 844
Average: 844/20 = 42.2
Now remember, we only bring back the numerator value back, so we divided 420, 380, 500 by 10, right? Now, we will multiply it again by 10 to get the real option.
42.2 Γ 10 = 422.
Option B.
Question 28
If 150% of 40% of A is equal to 120% of B, then A is more than B by what percentage?
A. 50%
B. 75%
C. 100%
D. 125%
Percentage Comparison
Given:
150% Γ 40% Γ A = 120% Γ B
Convert:
1.5 Γ 0.4 Γ A = 1.2 Γ B
0.6A = 1.2B
β A = 1.2B/0.6
β A = 2B
So:
A is double of B means 100% more than B
β
Answer: C. 100% more
π Shortcut: Convert to decimal β compare ratio.
Question 29
What is the pressure at the base of a lake of depth 25 m? (g = 9.8m/s2 and Density of water = 1 kg/litre)
A. 245000 Pa
B. 249000 Pa
C. 250000 Pa
D. 255000 Pa
Pressure Formula
P = pgh
Given:
p = 1000 kg/mΒ³
g = 9.8
h = 25
P = 1000 Γ 9.8 Γ 25
P = 245000 Pa
β
Answer: A. 2,45,000 Pa
π Trick: Water density = 1000 always.
Question 30
Who was elected as the President of the United Nations General Assembly (UNGA) for the 2026 session?
A) Dennis Francis
B) Ruchira Kamboj
C) Abdullah Shahid
D) Csaba KΕrΓΆsi
Ruchira Kamboj: In a historic move, the former Indian permanent representative was elected to lead the UNGA 81st session.
β
Answer: B. Ruchira Kamboj
Question 31
The internal surface area of an open cuboidal box with internal length 12 cm, breadth 15 cm and height 20 cm is:
A. 1240 cmΒ²
B. 1260 cmΒ²
C. 1280 cmΒ²
D. 1300 cmΒ²
Surface Area (Open Box)
Formula:
= 2(lb + bh + hl) β lb
Trick: Shorten the formula: lb + 2(bh + hl)
12 Γ 15 + 2(15 Γ 20 + 20 Γ 12)
180 + 2(300 + 240)
180 + 1080
1260
β
Answer: B. 1260
Question 32
In this question, a question is followed by two statements numbered (I) and (II). You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and decide the appropriate answer.
Q. Five students β Alok, Bharti, Celine, Darpan, and Ema β obtained different marks in an examination. Who scored the third highest marks?
(I) Darpan scored more than Alok and Bharti but less than Celine.
(II) Ema scored more than Darpan but less than Celine.
A. Data in Statement I alone is sufficient, but Statement II alone is not
B. Data in Statement II alone is sufficient, but Statement I alone is not
C. Both statements I and II together are sufficient, but neither alone is sufficient
D. Both statements I and II together are not sufficient
This is a Data Sufficiency + Ranking question. The goal is NOT to find all ranks β only check if we can fix who is 3rd highest.
π΄ Given
Five students: Raj (R), Kishan (K), Chotu (C), Meera (M), Gokul (G)
All have different marks.
π§ Statement (I)
βChotu scored more than Raj and Kishan but less than Gokul.β
This gives:
G > C > R,K
π But R and K order is unknown
π Meera is completely unknown
So possible rankings can change β 3rd position not fixed
β Statement (I) alone is NOT sufficient
π§ Statement (II)
βGokul scored more than Meera but less than Kishan.β
This gives:
K > G > M
π But R and C are unknown
Again, 3rd place can vary
β Statement (II) alone is NOT sufficient
π₯ Combine (I) + (II)
From (I): G > C > R,K
From (II): K > G > M
π§ Merge both: K > G > C > R,K (Impossible for K and M position is unclear)
Now observe carefully:
R & ? = 4th/5th (order doesn’t matter)
K = 1st or 4th/5th (Conflict)
G = 2nd
? = 3rd (Could be C or M, unclear)
β
Answer: D. Both statements I and II together are not sufficient
Question 33
Who founded the Faraizi Movement in Bengal?
A. Dudu Miyan
B. Haji Shariatullah
C. Syed Ahmad Barelvi
D. Titu Mir
The Faraizi Movement in Bengal was founded by Haji Shariatullah. Banglapedia describes it as a 19th-century religious reform movement launched by Haji Shariatullah.
β
Answer: B. Haji Shariatullah
Question 34
Which Constitutional Amendment lowered the voting age in India from 21 years to 18 years?
A. 58th Amendment
B. 61st Amendment
C. 62nd Amendment
D. 64th Amendment
The 61st Constitutional Amendment lowered the voting age from 21 to 18. The legislative text states that the proposal was to reduce the voting age from 21 years to 18 years.
β
Answer: B. 61st Amendment
Question 35
In February 2026, which Indian state became the first to grant “Legal Personhood” to its rivers to prevent industrial pollution?
A) Uttarakhand
B) Bihar
C) Madhya Pradesh
D) Assam
Madhya Pradesh: Following a landmark High Court ruling, the Narmada and Betwa rivers were granted legal rights similar to a human being.
β
Answer: C. Madhya Pradesh
Question 36
Three positive integers A, B and C are such that:
LCM(A, B) = 12, LCM(B, C) = 18, LCM(C, A) = 36
If the numbers are as small as possible, what is A + B + C?
A. 18
B. 19
C. 20
D. 21
LCM Problem
Given:
LCM(A,B) = 12
LCM(B,C) = 18
LCM(C,A) = 36
Break given LCMs
π So only primes involved are 2 and 3
Think in simple words (NO VARIABLES)
We need to separate A, B, C using 2s and 3s out of the grouped (A, B), (B, C), and (C, A):
For A look (A, B) & (C, A) β 22 came in both (A, B) and (C, A) which confirms it’s A. Only 3 left behind for B.
For C look (B, C) & (C, A) β 32 came in both (B, C) and (C, A) which confirms it’s C. Only 2 left behind for B.
For B look (A, B) & (B, C) β Two values left for B: 3 and 2.
Minimum values:
A=4, B=6, C=9
A + B + C = 19
β
Answer: B. 19
π Trick: Use prime factors.
Question 37
Find the median from the following grouped data.
| Age in years | No. of patients |
|---|---|
| 10-20 | 8 |
| 20-30 | 12 |
| 30-40 | 20 |
| 40-50 | 25 |
| 50-60 | 15 |
| 60-70 | 10 |
| 70-80 | 10 |
A. 42
B. 43
C. 44
D. 45
Median
Total No. of Patients = 100 β N/2 = 50
Median class: 40-50 = 25
l = 40
cf = 40 (Total frequency of prior 40-50: 8 + 12 + 20 = 40)
f = 25
h (50 – 40) = 10
Formula:
β
Answer: C. 44
Question 38
The “Blue Economy 2.0” policy, fully implemented in April 2026, primarily focuses on which sector?
A) Space Tourism
B) Sustainable Maritime Trade
C) Deep-sea Mining
D) Inland Fisheries
Sustainable Maritime Trade: The policy aims to balance ocean-based economic growth with social equity and environmental health.
β
Answer: B. Sustainable Maritime Trade
Question 39
Four years hence, a fatherβs age will be 4 times his sonβs age. Four years ago, the fatherβs age was 6 times his sonβs age. What are their present ages?
A. 70 and 14
B. 72 and 15
C. 76 and 16
D. 80 and 18
Let the present age of the son be and the father be .
Four years hence means after 4 years, so ages become x + 4 and y + 4,
and we are told the father will be 4 times the son, so y + 4 = 4(x + 4).
Four years ago means ages were x – 4 and y – 4, and the father was 6 times the son, so y – 4 = 6(x – 4).
Now simplify both:
from the first,
y + 4 = 4(x + 4)
y + 4 = 4x + 16
y = 4x + 16 – 4
y = 4x + 12.
From the second,
y – 4 = 6(x – 4)
y – 4 = 6x – 24
y = 6x – 24 + 4
y = 6x – 20.
Since both equal , set them equal:
y = y
4x + 12 = 6x – 20
12 + 20 = 6x – 4x
32 = 2x
x = 32/2
x = 16
Solving gives x = 16.
There is only one option with 16 that is Option C. But for education purposes, let’s see further.
Substitute back:
y = 4x + 12
y = 4(16) + 12
y = 64 + 12
y = 76.
So the present ages are: father = 76 years, son = 16 years.
β
Answer: C. 76 and 16
Question 40
The Financial Tracking Service (FTS) is provided by which UN office?
A. UNDP
B. UNESCO
C. OCHA
D. UNICEF
OCHAβs Financial Tracking Service page says the service is provided by the United Nations Office for the Coordination of Humanitarian Affairs.
β
Answer: C. OCHA
Question 41
If 25% of , then the value of y is:
A. 4
B. 5
C. 6
D. 7
Simplify
25% Γ 96 = 24
Let’s put the values:
y = 24 β 18
y = 6
β
Answer: C. 6
Question 42
Which Indian cricketer became the fastest to reach 15,000 runs in ODI history in January 2026?
A) Virat Kohli
B) Shubman Gill
C) Rohit Sharma
D) Yashasvi Jaiswal
Shubman Gill: Continuing his record-breaking form, Gill surpassed Virat Kohliβs record for the fastest 15k runs in fewer innings.
β
Answer: B. Shubman Gill
Question 43
Based on the English alphabetical order, three of the following four letter clusters are alike in a certain way and form a group. Which is the one that does not belong to that group?
A. CEG
B. FHJ
C. KMO
D. NQT
Pattern:
Option A: CEG
C + 2 = E
E + 2 = G
Option B: FHJ
F + 2 = H
H + 2 = J
Option C: KMO
K + 2 = M
M + 2 = O
Option D: NQT
N + 3 = Q
Q + 3 = T
Only Option D is different.
β
Answer: D. NQT
Question 44
Which of the following should replace # and % so that the pattern and relationship between the pair on the left of :: is the same as on the right?
#:EGI :: KMO:
A. # = CEG, % = MOQ
B. # = CIK, % = MOQ
C. # = CGJ, % = MOP
D. # = DGK, % = NOP
Pattern:
EGI
E + 2 = G
G + 2 = I
KMO
K + 2 = M
M + 2 = O
So Option A makes more sense.
C E (+2) G (+2)
M O (+2) Q (+2)
β
Answer: A. # = CEG, % = MOQ
Question 45
A typist takes 44 minutes to type 4 pages. How long will he take to type 99 pages?
A. 1000 minutes
B. 1011 minutes
C. 1089 minutes
D. 1099 minutes
Time Work
4 pages = 44 min
1 page = 44/4 = 11 min
99 pages = 99 x 11 = 1089 min
β
Answer: C. 1089
Question 46
What should come next in the series?
6, 11, 18, 27, 38, ?
A. 47
B. 49
C. 51
D. 53
Solution
Series:
6,11,18,27,38,?
Differences are:
5,7,9,11
The next difference is: 13
So: 38 + 13 = 51
Quick trick: The differences are consecutive odd numbers.
Correct answer: C. 51
Question 47
If βAβ stands for βΓ·β, βBβ stands for βΓβ, βCβ stands for β+β and βDβ stands for βββ, then what comes in place of the question mark?
48 B 6 C 4 D 28 A 2=?
A. 132
B. 432
C. 466
D. 278
Operator Coding
BODMAS: Must follow Step-by-step “Bracket Open Divide Multiply Addition Subtract”
48 Γ 6 + 4 β 28 Γ· 2
= 288 + 4 β 14
= 292 – 14
= 278
β
Answer: D. 278
Question 48
A car travels 150 km at 50 km/h and then 120 km at 60 km/h. What is its average speed for the whole journey?
A. 52 km/h
B. 54 km/h
C. 56 km/h
D. 58 km/h
Solution
Total distance:
150 + 120 = 270 km
Total time:
Average speed:
Quick trick: Average speed = total distance Γ· total time, not the average of speeds.
Correct answer: B. 54 km/h
Question 49
22 is related to 51 following a certain logic. Following the same logic, 13 is related to 33. To which of the following is 31 related, following the same logic?
A. 43
B. 53
C. 62
D. 69
Number Logic: (Γ2 +7)
22 β 51
(22Γ2 +7 = 51)
13 β 86
(13Γ2 +7 = 33)
31 β 31 Γ 2 + 7 = 69 β
β
Answer: D. 69
Question 50
Refer to the following letter, number, symbol series and answer the question.
(Left) A 5 @ B C Β£ 2 D E # F 3 G H % I 7 J (Right)
If all the numbers are dropped from the series, which of the following will be fifth from the left?
A. B
B. C
C. Β£
D. D
Series
Remove numbers:
(Left) A @ B C Β£ D E # F G H % I J (Right)
5th from left = Β£
β
Answer: C. Β£

