RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 2051
Arithmetic
If 1 is added to each odd digit and 2 is subtracted from each even digit in the number 8574162, what will be the sum of the digits which are second from the left and second from the right in the new number thus formed?
A
8B
11C
10D
9Question 2052
Arithmetic
What does setting a Page Break in MS Excel 365 allow you to control?
A
Where headers appear on each pageB
The maximum size of printable marginsC
Where the worksheet splits across printed pagesD
Whether formulas are recalculated before printingQuestion 2053
Arithmetic
A group of numbers and symbols is coded using letter codes as per the codes given below and the conditions that follow. Study the given codes and conditions and answer the question that follows. Note: If none of the conditions apply, then codes for the respective number/symbol are to be followed directly as given in the table. Letter Z T E P A U X Code 8 $ @ 9 2 % 6 Conditions: 1. If the 1 st letter is a vowel and the last letter is a consonant, their codes are to be interchanged. 2. If the 2 nd letter is a vowel and the last letter is a consonant, both are to be coded as 'W'. 3. If the 3 rd and 4 th letters are consonants, both are to be coded as the code for the 3 rd letter. 4. If the 1 st and 2 nd letters are vowels, then both are to be coded as 'Q'. What will be the code for the following group? AUTEA
A
Q Q $ @ 2B
2 % $ @ 2C
2 W $ @ 2D
2 Q $ @ 2Question 2054
Arithmetic
In a certain code language, 'GSTA' is coded as '51' and 'XMBJ' is coded as '53'. What is the code for 'YDOM' in the given language?
A
58B
55C
60D
61Question 2055
Arithmetic
If 'W' stands for '÷', 'X' stands for 'x', 'Y' stands for '+' and 'Z' stands for '-', then the resultant of which of the following would be 94?
A
48 Y 8 X 56 W 24 Z 6B
48 W 8 Z 56 Y 24 X 6C
48 Z 8 W 56 X 24 Y 6D
48 X 8 Y 56 Z 24 W 6Question 2056
Arithmetic
If 1 is added to each even digit and 1 is subtracted from each odd digit in the number 8629475, what will be the sum of the highest and lowest digits in the new number thus formed?
A
6B
16C
12D
14Question 2057
Arithmetic
PH 14 is related to SD 30 in a certain way. In the same way, JI 18 is related to ME 34. To which of the given options is MU 6 related, following the same logic?
A
NH 33B
PQ 22C
HL 31D
IV 20Question 2058
Arithmetic
A man spends 12% of his monthly salary on house rent. If every month, he also spends ₹407 on conveyance and ₹8,657 on grocery and saves the remaining ₹924, his monthly salary is:
A
₹11,413B
₹11,350C
₹11,449D
11,377Question 2059
Arithmetic
Town C is to the west of Town D. Town E is to the east of Town C. Town F is to the north of Town D. Town G is to the north of Town E. Town G is to the north-west of Town D. What is the position of Town E with respect to Town D?
A
NorthB
WestC
EastD
SouthQuestion 2060
Arithmetic
In March 2021, India successfully tested a high-energy laser-directed weapon system, becoming the fourth nation globally to achieve this feat. Which countries had previously developed such systems?
A
Russia, Israel and GermanyB
The US, The UK and FranceC
China, Japan and South KoreaD
The US, Russia and ChinaQuestion 2061
Arithmetic
Which navigation satellite did India launch in January 2021 to enhance its NavIC system?
A
IRNSS-1GB
NVS-02C
NVS-01D
GSAT-10Question 2062
Arithmetic
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.)
A
GZ-LSB
MF-RYC
YR-EKD
AT-FMQuestion 2063
Arithmetic
Samantha Bansil's novel, set in precolonial Philippines, is titled:
A
Black Salt QueenB
The Bamboo SwordC
The Pearl DiverD
Island of the LostQuestion 2064
Arithmetic
The salaries of X, Y, and Z are in the ratio 10 : 20 : 20. If the increments of 82%, 50%, and 19% are allowed respectively in their salaries, what will be the new ratio of their salaries?
A
88 : 151 : 123B
91 : 150 : 119C
90 : 153 : 126D
92 : 154 : 120Question 2065
Arithmetic
In the 2024 Global Innovation Index, which organisation ranked India 39th among 133 global economies, highlighting its leadership in the Central and Southern Asian region?
A
World BankB
World Economic ForumC
International Monetary FundD
World Intellectual Property OrganizationQuestion 2066
Arithmetic
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.)
A
UX-YBB
GJ-JPC
PS-TWD
YB-CFQuestion 2067
Arithmetic
Which of the options below is equivalent to $216x^3 + 27y^3 + 324x^2y + 162xy^2$?
A
$(6x + 3y)^3$B
$(8x + 3y)^3$C
$(6x+6y)^3$D
$(3x+6y)^3$Question 2068
Arithmetic
The value of $(\sec\theta - \tan\theta)^2 (1 + \sin\theta)^2 + \cos^2\theta$ is
A
-2B
2C
0D
1Question 2069
Arithmetic
Priya bought 45 kg of apples and mangoes for ₹1,240. The prices of apples and mangoes were ₹25/kg and ₹30/kg, respectively. How much money did she spend on mangoes separately?
A
₹650B
₹700C
₹690D
₹676Question 2070
Arithmetic
In a certain code language, 'A + B' means 'A is the sister of B' 'A - B' means 'A is the brother of B' 'A × 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 Q if 'M × N - O ÷ P + Q'?
A
Mother's Brother's WifeB
Father's Brother's WifeC
Father's Brother's DaughterD
Mother's Brother's DaughterQuestion 2071
Arithmetic
Which leader collaborated with Mahatma Gandhi during the Kheda Satyagraha in 1918?
A
Subhas Chandra BoseB
Raj Kumar ShuklaC
Sardar Vallabhbhai PatelD
Lala Lajpat RaiQuestion 2072
Arithmetic
This question is based on the five, three-digit numbers given below. (Left) 194 932 446 225 493 (Right) (Example- 697 - First digit = 6, second digit = 9 and third digit = 7) (NOTE: All operations to be done from left to right.) What will be the resultant if the first digit of the highest number is added to the second digit of the lowest number?
A
17B
16C
15D
18Question 2073
Arithmetic
As per the Union Budget 2021-26, what is the total number of Gram Panchayats in India?
A
2.68 lakhB
3.97 lakhC
2.00 lakhD
1.65 lakhQuestion 2074
Arithmetic
What should come in place of the question mark (?) in the given series? 992 990 986 980 972 ?
A
961B
958C
962D
959Question 2075
Arithmetic
Which Harappan site shows evidence of ploughed fields?
A
KalibanganB
Mohenjo-daroC
DholaviraD
Lothal