← RRB-NTPC-UG-2025
RRB · Mathematics

Set 27 — 19 Jun 2026 (12:45 PM - 2:15 PM)

2025 · 30 questions · First 10 Solutions Free
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Q1 mcq
The present ages of A and B are in the ratio 5 : 7. After 6 years, the sum of their ages will be 60 years. What is A’s present age?
a.
20 years Correct Answer
b.
30 years
c.
40 years
d.
25 years

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Q2 mcq
The average of 8 numbers is 43. If each number is decreased by 7, what will the new average be?4635
a.
43
b.
36 Correct Answer
c.
8
d.
29

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Q3 mcq
Two trains of lengths 100 m and 150 m are moving in opposite directions at 40 km/h and 60 km/h, respectively. Find the time taken by the trains (in seconds) to cross each other other.
a.
9 seconds Correct Answer
b.
8.9 seconds
c.
9.5 seconds
d.
8 seconds

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Q4 mcq
Juhi and Mamta have certain amount of money. If Juhi gives ₹30 to Mamta, Juhi will then have twice as much money as Mamta. However, if Mamta gives ₹10 to Juhi, Juhi will then have four times as much money as Mamta. What is the total amount of money (in ₹) that Juhi and Mamta initially had together?
a.
310
b.
320
c.
290
d.
300 Correct Answer

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Q5 mcq
Pipes A, B and C can together fill a tank in 6 hours. After working together for 2 hours, C is closed and A and B together fill the remaining part in 7 hours. The time taken (in hours) by C alone to fill the tank is:
a.
9
b.
12
c.
14 Correct Answer
d.
21

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Q6 mcq
₹1,472 is divided among Rohit, Maya, and Vikas in such a way that if ₹25, ₹52, and ₹18 be deducted from their respective shares, they have money in the ratio 15:19:17. Find Vikas’s amount after deduction.
a.
₹459 Correct Answer
b.
₹509
c.
₹559
d.
₹359

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Q7 mcq
The ages of father and son are in the ratio of 12:7. Four years from now, their ages will be in the ratio of 5:3. Find the sum of their present ages.
a.
119 years
b.
128 years
c.
152 years Correct Answer
d.
139 years

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Q8 mcq
What is the average of prime numbers lying between 5 and 30?
a.
17 Correct Answer
b.
21
c.
23
d.
19

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Q9 mcq
A wholesaler allows a scheme discount of 25% on an article whose marked price is ₹2,400. The retailer is required to pay the remaining amount in full. What is the net price paid by the retailer?
a.
₹1,750
b.
₹1,700
c.
₹1,800 Correct Answer
d.
₹1,900

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Q10 mcq
If the cost of 6 chocolates, 12 chocolates, and x chocolates are in proportion such that x is the third proportional, how many chocolates correspond to x?
a.
24 Correct Answer
b.
28
c.
26
d.
32

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Q11 mcq
A sum, when invested at 20% simple interest per annum, amounts to ₹5,040 after 3 years. What is the simple interest (in ₹) on the same sum at the same rate in 2 years?3953
a.
5,040
b.
1,260
c.
630
d.
2,520
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Q12 mcq
If the ratio of the height of a tower and the length of its shadow on the ground is √3 : 1, then the angle of elevation of the sun is:
a.
30°
b.
45°
c.
60°
d.
65°
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Q13 mcq
P sells an item to Q and earns 12% profit. Q sells it to R and earns a profit of ₹26. If the item was sold to R directly by P at the same price, the percentage of profit would have been 25%. The cost price of the item is ₹_____.
a.
220
b.
250
c.
200
d.
180
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Q14 mcq
A sum is invested at 8% per annum, compounded half‑yearly. If the amount after one year is ₹10,816, then what was the principal (in ₹)?
a.
10,000
b.
10,500
c.
10,400
d.
10,200
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Q15 mcq
The sum of the surface areas of two spheres is 12584 π sq. cm. The radius of the larger sphere is five times the radius of the smaller sphere. Find the diameter of the larger sphere.
a.
115 cm
b.
110 cm
c.
125 cm
d.
120 cm
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Q16 mcq
A cyclist travels from town A to town B, a distance of 182 km. For the first 84 km, he rides at a certain speed. For the remaining distance (98 km), he increases his speed by 7 km/h and therefore reaches 42 minutes earlier than the time he would have taken if he had travelled the entire distance at the original speed. Find the original speed.
a.
21 km/hr
b.
28 km/hr
c.
24 km/hr
d.
22.5 km/hr
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Q17 mcq
The sum of two positive numbers is 14 and their product is 45. The positive difference between them is:
a.
4
b.
7
c.
11
d.
8
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Q18 mcq
The marked price of a cooker is the same at four shops I, II, III and IV. Shop I allows two successive discounts of 89% and 68%, shop II allows successive discounts of 50% and 51%, shop III allows successive discounts of 25% and 11% and shop IV allows successive discounts of 94%, 49%, and 21% on the marked price of the cooker. Which shop is selling the cooker at the lowest price?3338
a.
II
b.
III
c.
I
d.
IV
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Q19 mcq
A shirt costs ₹655. During a sale, its price is reduced by 20%. What is the new price (in ₹) of the shirt?
a.
526
b.
524
c.
525
d.
527
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Q20 mcq
The LCM of the numbers 15, 10 and 0.4 is:8522
a.
34
b.
32
c.
30
d.
36
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Q21 mcq
A and B can do a piece of work in 12 days and 6 days, respectively. Both work for 2 days and then A leaves. B completed the remaining work alone. The whole work was completed in ______________ days.
a.
3
b.
4
c.
6
d.
5
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Q22 mcq
Which of the following options is the nearest number to 95061 that is divisible by 9?
a.
95059
b.
95057
c.
95060
d.
95058
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Q23 mcq
Which of the following are true to construct a quadrilateral uniquely? ( i ) Rhombus and square can be constructed when 2 diagonals are given. ( ii ) The lengths of 2 adjacent sides and 2 angles are given. ( iii ) The lengths of 3 sides and 1 angle are given. ( iv ) The lengths of 4 sides and 1 diagonal are given.
a.
( i ) and ( iii )
b.
( ii ) and ( iv )
c.
( ii ) and ( iii )
d.
( i ) and ( iv )
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Q24 mcq
If the sum of two distinct consecutive prime numbers is 36, what is the product of the two primes?
a.
221
b.
289
c.
361
d.
323
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Q25 mcq
The mode of the numbers 7, 8, 7, 9, 10 is:
a.
10
b.
8
c.
7
d.
9
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Q26 mcq
An investor’s portfolio value decreases by 30% in the first quarter but then increases by 50% in the next quarter. What is the overall percentage change in the portfolio value?
a.
20% increase
b.
5% increase
c.
15% decrease
d.
10% increase
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Q27 mcq
A fruit seller uses a faulty balance that reads 900 grams as 1 kg. He sells ₹120 per kg (actual weight), what is his actual profit percentage?
a.
A.
b.
B.
c.
C.
d.
D.
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Q28 mcq
The radius of the base of a cylinder is 3.5 cm and its curved surface area
a.
1370 cm³
b.
1024 cm³
c.
1424 cm³
d.
1078 cm³
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Q29 mcq
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Q30 mcq
a.
A.
b.
B.
c.
C.
d.
D. apples at ₹150 per kg (as per faulty balance). If his purchase price is is 616 cm². Find the volume of the cylinder. GA
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