RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 2201
Arithmetic
What is the median of the following data? 34, 78, 58, 65, 64, 73, 21, 88, 13, 11, 70
A
64B
63.5C
64.5D
65Question 2202
Arithmetic
Shaan starts from Point A and drives 6 km towards North. He then takes a right turn, drives 7 km, turns right and drives 12 km. He then takes a right turn and drives 8 km. He takes a final right turn, drives 6 km and stops at Point P. How far (shortest distance) and towards which direction should he drive in order to reach Point A again? (All turns are 90° turns only unless specified)
A
2 km to the eastB
3 km to the eastC
4 km to the eastD
1 km to the eastQuestion 2203
Arithmetic
Which vitamin deficiency is most likely in a person with a blocked bile duct?
A
Vitamin B12B
Vitamin AC
Vitamin B1D
Vitamin CQuestion 2204
Arithmetic
Shan has ₹1,617 with him. He divided it amongst his sons Piyush and Manoj and asked them to invest it at 10% rate of interest per annum, compounded annually. It was seen that Piyush and Manoj got the same amount after 11 and 12 years, respectively. How much (in ₹) did Shan give to Piyush?
A
₹697B
₹847C
₹870D
₹770Question 2205
Arithmetic
The subtropical jet stream plays a critical role in the withdrawal of the monsoon by which of the following?
A
Replacing tropical easterliesB
Inducing subsidence over landC
Triggering cold air advectionD
Intensifying the ITCZQuestion 2206
Arithmetic
Aus', 'Aman' and 'Boro' are important crops of which of the following in states like Assam, West Bengal and Odisha?
A
WheatB
CottonC
PaddyD
MustardQuestion 2207
Arithmetic
Who among the following appoints the Chairman of the National Human Rights Commission of India?
A
The Chief Justice of IndiaB
The President of IndiaC
The Prime MinisterD
The Speaker of the Lok SabhaQuestion 2208
Arithmetic
If 5.1 : 96.9 :: 96.9 : x, then find the value of x.
A
1845.8B
1837.9C
1844.3D
1841.1Question 2209
Arithmetic
A and B can complete a work in 11 days and 33 days, respectively. They started doing the work together, but after 3 days, B had to leave, and A completed the remaining work alone. The remaining work was completed in ______ days.
A
7B
11C
10D
12Question 2210
Arithmetic
In a certain code language, 'FARE' is coded as '8432' and 'FEAT' is coded as '3287'. What is the code for 'R' in the given code language?
A
2B
3C
8D
4Question 2211
Arithmetic
Refer to the following number and symbol series and answer the question that follows. Counting to be done from left to right only. (Left) 1 @ 2 2 7 © & 8 6 * # 9 3 6 & 6 # & * © @ 8 (Right) How many such numbers are there each of which is immediately preceded by a number and also immediately followed by a number?
A
1B
3C
2D
4Question 2212
Arithmetic
Which of the following technologies was used to fabricate the Vikram 3201 microprocessor launched in 2021?
A
90nm CMOS technologyB
250nm CMOS technologyC
180nm CMOS technologyD
350nm CMOS technologyQuestion 2213
Arithmetic
Which dance form represents a mock fight between Durga and Mahishasura?
A
KalbeliaB
Dandiya RaasC
GhoomarD
TarangmelQuestion 2214
Arithmetic
The marks obtained by the students of a class are given. Find the standard deviation of the marks (rounded off to 2 decimal places). 65, 47, 59, 75, 82, 91, 55 and 78
A
12.53B
13.99C
14.25D
15.05Question 2215
Arithmetic
This question is based on the five, three-digit numbers given below. (Left) 325 503 158 391 144 (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 second digit of the highest number is added to the first digit of the lowest number?
A
2B
0C
4D
1Question 2216
Arithmetic
Factorise the given expression. $100a^2 + 300ab + 225b^2$
A
$(15a-10b)^2$B
$(10a-15b)^2$C
$(10a + 15b)^2$D
$(15a + 10b)^2$Question 2217
Arithmetic
In this question, a group of letters is coded by using numbers and symbols as per the table given below and the conditions which follow. Letter U M S J P T F Code 7 4 @ $ % * 6 Conditions: 1. If the 1st letter is a vowel and the 3rd letter is a consonant, both are to be coded as the code for that 3rd letter consonant. 2. If the 1st and last letters are vowels, both are to be coded as 'N'. 3. If the 2nd and last letters are vowels, their codes are to be interchanged. What is the correct combination of codes (by following only the applicable condition(s)) for the following letters? AJSPT
A
3$%@*B
3$3%*C
3$3%*D
@$@%*Question 2218
Arithmetic
Who are the members of India's recurve men's archery team that won a silver medal in the World Cup Stage 1, 2021?
A
Tarundeep Rai, Jayanta Talukdar and Rahul BanerjeeB
Dhiraj Bommadevara, Abhishek Verma and Atanu DasC
Atanu Das, Abhishek Verma and Tarundeep RaiD
Dhiraj Bommadevara, Atanu Das and Tarundeep RaiQuestion 2219
Arithmetic
In 2024, India introduced a fast-track procurement clause in which defence procurement policy to reduce acquisition delays?
A
Defence Acquisition ProcedureB
Defence Procurement ManualC
Defence Offset PolicyD
Make in India Defence ProtocolQuestion 2220
Arithmetic
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements. Statements: All bikes are roads. Some roads are TVs. Some TVs are cups. Conclusions: (I) All roads are bikes. (II) All roads are TVs.
A
Both conclusion (I) and (II) followB
Only conclusion (II) followsC
Neither conclusion (I) nor (II) followsD
Only conclusion (1) followsQuestion 2221
Arithmetic
If 25% of k is 10 less than 1800% of 10, then k is:
A
640B
680C
660D
720Question 2222
Arithmetic
What is the main advantage of saving an MS PowerPoint presentation as a .pdf file?
A
It enables users to modify slides in any PDF viewer.B
It reduces file size and prevents unwanted editing.C
It allows all MS PowerPoint animations to run.D
It automatically translates text into different languages.Question 2223
Arithmetic
If the third proportional of 36 and Z is 4, then what is the positive value of Z?
A
14B
11C
9D
12Question 2224
Arithmetic
Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. OL-QN-SU LI-NK-PR
A
SO-TR-VYB
RO-TQ-VXC
RO-TQ-VYD
SO-TQ-VYQuestion 2225
Arithmetic
With reference to the 40th Amendment Act, 1976, which category of maritime zones came under the legislative jurisdiction of the Parliament?
A
Groundwater reservesB
Territorial waters and EEZC
Inter-state river watersD
Inland rivers and lakes