RRB-NTPC 2021 Mathematics
Practice subject-wise previous year questions
Question 2676
Arithmetic
Which keyboard shortcut is used to copy selected text in MS Word 365?
A
Ctrl + VB
Ctrl + CC
Ctrl + XD
Ctrl + ZQuestion 2677
Arithmetic
If the third proportional of 40 and Z is 10, then what is the positive value of Z?
A
21B
19C
20D
17Question 2678
Arithmetic
In a certain code language, 'LOST' is coded as '6832' and 'SALT' is coded as '2136'. What is the code for 'A' in the given code language?
A
3B
6C
1D
2Question 2679
Arithmetic
What should come in place of the question mark (?) in the given series? 1514 1513 1517 1508 1524 ?
A
1478B
1499C
1476D
1474Question 2680
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 pulse are rice. All rice are wheat. All wheat are corn. Conclusions: (I) All pulse are corn. (II) Some corn are rice.
A
Neither conclusion (I) nor (II) followsB
Both conclusions (I) and (II) followC
Only conclusion (II) followsD
Only conclusion (I) followsQuestion 2681
Arithmetic
If 3 is added to each even digit and 2 is added to each odd digit in the number 413257, what will be the sum of the first and last digits in the new number thus formed?
A
14B
12C
10D
16Question 2682
Arithmetic
If the selling price of a bed is 2-times of initial, then the profit is 8-times of initial. Find the initial profit percentage (in %).
A
300B
400C
25D
16.67Question 2683
Arithmetic
Mr. Becks starts from Point A and drives 9 km towards the East. He then takes a right turn, drives 16 km, turns right and drives 28 km. He then takes a right turn and drives 21 km. He takes a final right turn, drives 19 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 degrees turns only unless specified.)
A
5 km to the SouthB
3 km to the NorthC
7 km to the SouthD
1 km to the NorthQuestion 2684
Arithmetic
Who were the 'Rajukas' during the Mauryan period?
A
Provincial officialsB
MilitiasC
CraftsmenD
Army administratorsQuestion 2685
Arithmetic
Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? HKP22 ILQ31 JMR40 KNS49?
A
LOT59B
LOS59C
LOT58D
LOS58Question 2686
Arithmetic
A, B, C, D, E and F live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it, number 2 and so on, till the topmost floor is numbered 6. B lives on an odd numbered floor but not 3. The sum of floors on which B and D live is 7. E lives immediately below F. C lives on the top floor. How many people live above E?
A
2B
4C
3D
1Question 2687
Arithmetic
Consider the following statements regarding Operation Brahma, launched in March 2021. The operation was launched by the Government of India to assist Myanmar and Thailand after a major earthquake. Indian Navy ships Satpura and Savitri from the Eastern Naval Command sailed for Yangon with relief material. The Indian Army deployed a 118-member medical task force from the Shatrujeet Brigade as part of the relief efforts. A 60-bed Medical Treatment Centre was set up by the Indian Army in Thailand for trauma and emergency care. Which of the above statements are correct?
A
Only 1 and 4B
Only 2 and 3C
1, 2, 3 and 4D
Only 1, 2 and 3Question 2688
Arithmetic
Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? SPM 8, TQN 14, URO 20, VSP 26, ?
A
WQM 30B
XPM 30C
WTQ 32D
XRN 32Question 2689
Arithmetic
Which two numbers should be interchanged to make the following equation correct? (Note: The entire number should be interchanged and not individual digits of a given number.) $24 \times 3 + (32 \div 4) - 10 \times 8 + 26 = 196$
A
4 and 8B
3 and 8C
26 and 24D
24 and 32Question 2690
Arithmetic
A group of people consists of men, women and children. Among them, 20% are men, 30% are women and the rest are children, and their average weights are 50 kg, 40 kg and 30 kg, respectively. The average weight of the group (in kg) is:
A
37B
36C
34D
35Question 2691
Arithmetic
Hiromi Kawakami's speculative fiction novel, shortlisted for the 2021 International Booker Prize, is titled:
A
Strange Weather in TokyoB
The Nakano Thrift ShopC
Under the Eye of the Big BirdD
The Ten Loves of NishinoQuestion 2692
Arithmetic
Which of the following numbers is divisible by 44?
A
3379B
2967C
3550D
3344Question 2693
Arithmetic
A water tank can be filled in 19 minutes by using 39 pipes of the same capacity. In how many minutes (rounded off to two decimal places) will the water tank be filled if we use 23 pipes of the same capacity as above?
A
24.73B
32.22C
27.49D
37.03Question 2694
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 $ 4 2 2 7 4 1 8 € 6 9 3 £ 3 £ 9 @ % 9 # £ (Right) How many such numbers are there each of which is immediately preceded by a number and also immediately followed by a symbol?
A
3B
1C
2D
4Question 2695
Arithmetic
Kalpana and Sudha got 656 and 697 marks, respectively, in the same examination. If Kalpana scored 32% marks, then what is the percentage of marks scored by Sudha?
A
32%B
35%C
34%D
37%Question 2696
Arithmetic
The sides of a triangle are 109 cm, 171 cm, and 100 cm. What is the length (in cm) of its altitude corresponding to the side with a length of 171 cm?
A
94B
49C
60D
82Question 2697
Arithmetic
According to World Bank's State of Social Protection Report 2021, as of 2022, how many people in low- and middle-income countries lacked adequate social protection coverage?
A
04 billionB
02 billionC
05 billionD
03 billionQuestion 2698
Arithmetic
What was the theme for the Republic Day 2021 celebrations in India?
A
Swarnim Bharat: Virasat Aur VikasB
Celebrating the ConstitutionC
Unity in DiversityD
India@75: A Nation Marching ForwardQuestion 2699
Arithmetic
According to the World Bank 2021 data, what was the poverty rate at $2.15 a day (2017 PPP) for India?
A
12.92%B
8.90%C
15%D
10.50%Question 2700
Arithmetic
Who is known as the 'Mother of Indian Revolution' for her pioneering role in the early Indian independence movement and for unfurling the first version of the Indian national flag abroad?
A
Vijaya Lakshmi PanditB
Annie BesantC
Madam Bhikaji CamaD
Sarojini Naidu