RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 2451
Arithmetic
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.) (37, 48, 59) (41, 52, 63)
A
(47, 58, 70)B
(32, 43, 64)C
(56, 67, 78)D
(24, 35, 44)Question 2452
Arithmetic
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (NOTE: All numbers are single digit numbers only.) (Left) © 9 6 £ 9 & € 8 4 4 2 @ © £ # 4 * 7 © 7 9 6 (Right) How many such numbers are there each of which is immediately preceded by a symbol and also immediately followed by a symbol?
A
5B
4C
2D
3Question 2453
Arithmetic
Trade Receivables Discounting System (TReDS) is an electronic platform for facilitating the financing/discounting of trade receivables of which sector?
A
Pharmaceutical sectorB
Exporting businessC
Software businessD
MSME sectorQuestion 2454
Arithmetic
Which of the following numbers is divisible by 16?
A
1382B
1165C
1702D
1584Question 2455
Arithmetic
Which of the following lakes in Rajasthan is artificial?
A
SambharB
Ana SagarC
RamgarhD
PushkarQuestion 2456
Arithmetic
If the equations $x^2+3x+2=0$ and $ax^2+bx+c=0$ have both roots in common, then which of the following is NOT true?
A
$4a − 2b + c = 0$B
$a-b+c=0$C
$a + c = b$D
$4a = 2c + 2b$Question 2457
Arithmetic
If '+' means 'subtraction', '-' means 'multiplication', 'x' means 'division' and '÷' means 'addition', then what will come in place of the question mark (?) in the following equation? $171 ÷ 95 \times 5 - 4 + 33 = ?$
A
204B
209C
226D
214Question 2458
Arithmetic
A man spends 74% of his monthly salary on house rent. If every month, he also spends ₹385 on conveyance and ₹2,725 on grocery and saves the remaining ₹621, his monthly salary is:
A
₹14,287B
₹14,389C
₹14,350D
₹14,373Question 2459
Arithmetic
The ratio between the fourth proportional of 2, 8 and 12 to the mean proportional of 9 and 4 is:
A
10:3B
11:3C
8:1D
9:2Question 2460
Arithmetic
If 2 is added to each odd digit and 2 is subtracted from each even digit in the number 6127385, then which of the following digits will be third from the right?
A
6B
5C
7D
4Question 2461
Arithmetic
A student spends ₹300, ₹250, ₹350, ₹200, and ₹400 on groceries over five weeks. What is the average amount spent per week?
A
₹280B
₹340C
₹300D
₹320Question 2462
Arithmetic
Which of the following brings winter rainfall to northern plains of India?
A
EasterliesB
NorwestersC
Bay of Bengal cyclonesD
Western disturbancesQuestion 2463
Arithmetic
A, B and C alone can do a piece of work in 11, 33 and 48 days, respectively. They all started the work together, but A left after 2 days. In how many days was the remaining work completed?
A
16B
13C
14D
15Question 2464
Arithmetic
According to the Charter Act of 1793, the charter of the east India company was renewed for how many years?
A
15B
18C
20D
25Question 2465
Arithmetic
A person saves 40% of his income. If his expenditure is ₹360, then his income (in ₹) is:
A
600B
144C
216D
640Question 2466
Arithmetic
In a certain code language, 'CART' is coded as '4268' and 'RISE' is coded as '3527'. What is the code for 'R' in the given code language?
A
2B
6C
7D
3Question 2467
Arithmetic
A is married to E. E is the sister of R. R is married to D. D is the only brother of Z. B is the only daughter of R. How is A related to B?
A
Mother's sister's husbandB
Father's sister's husbandC
Mother's sister's fatherD
Mother's brother's wifeQuestion 2468
Arithmetic
In a certain code language, 'HUNT' is coded as '6438' and 'USER' is coded as '5723'. What is the code for 'U' in the given code language?
A
3B
5C
7D
4Question 2469
Arithmetic
Consider the following statements regarding Exercise Tiger Triumph - 25, which was conducted in April 2021. It was a bilateral Tri-Service Humanitarian Assistance and Disaster Relief (HADR) exercise between India and the United Kingdom. The Harbour Phase of the exercise was scheduled at Visakhapatnam, while the Sea Phase and HADR operations were conducted off Kakinada. Indian participation included INS Vikrant along with other Army and Air Force contingents. The exercise aimed to develop interoperability and formulate SOPs for a Combined Coordination Centre during joint operations. Which of the above statements are correct?
A
1, 2, 3 and 4B
Only 3 and 4C
Only 2 and 4D
Only 1 and 2Question 2470
Arithmetic
In MS Excel, which feature ensures that only a specified portion of the spreadsheet is printed?
A
Page Break PreviewB
Print AreaC
Margin SettingsD
Page OrientationQuestion 2471
Arithmetic
Find a single discount equal to three consecutive discounts of 20%, 13% and 20%.
A
44.95%B
42.74%C
48.08%D
44.32%Question 2472
Arithmetic
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (NOTE: All numbers are single digit numbers only.) (Left) © © 4 3 5 6 7 # * 1 3 % 9 2 7 5 9 & £ @ 7 * (Right) How many such numbers are there each of which is immediately preceded by a number and also immediately followed by a number?
A
5B
6C
8D
7Question 2473
Arithmetic
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (NOTE: All numbers are single digit numbers only.) (Left) @ 9 7 8 2 @ @ 9 3 * 2 6 2 © # 9 & 7 8 9 @ 4 (Right) How many such symbols are there each of which is immediately preceded by a number and also immediately followed by a number?
A
2B
4C
5D
3Question 2474
Arithmetic
What is the median of the following distribution? Class 140-190 190-240 240-290 290-340 340-390 Frequency 23 13 24 25 35
A
301B
278C
290D
304Question 2475
Arithmetic
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 to/subtracting from/multiplying with 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) (22, 28, 31) (39, 45, 48)
A
(53, 59, 65)B
(44, 47, 50)C
(17, 20, 26)D
(27, 33, 36)