RRB-NTPC 2021 Mathematics

Practice subject-wise previous year questions

Question 1751

2,700, 6,000 and 6,420

2,500, 5,200 and 7,420

2,820, 4,500 and 7,800

1,920, 4,800 and 8,400

Question 1752

Question 1753

Question 1754

# = FNR, % = RVM

# = HMR, % = TVW

# = HNT, % = TUT

# = FMP, % = RUY

Question 1755

# = UTZ, % = OZV

# = XQB, % = UTZ

# = OZV, % = LCT

# = LCT, % = XQB

Question 1756

They become dual citizens.

Nothing changes.

Their Indian citizenship ends automatically.

They must get government approval.

Question 1757

Question 1758

Question 1759

Question 1760

Question 1761

Madhya Pradesh

West Bengal 

Uttar Pradesh

Question 1762

$3x^2 + 10x + 8$

$4x^2 + 12x + 8$

$4x^2 + 10x + 6$

$3x^2 + 7x + 6$

Question 1763

First vaccine for prevention of smallpox

First effective antibiotic against bacterial infections

First drug for Rabies prevention and cure

First antiviral drug for Human Immunodeficiency Virus (HIV)

Question 1764

Question 1765

Question 1766

Libia Lobo Sardesai

Lama Lobzang

Madugula Nagaphani Sarma

Question 1767

Question 1768

Question 1769

$70 \over 13$ hours

$89 \over 13$ hours

$88 \over 13$ hours

$80 \over 13$ hours

Question 1770

Catherine Coleman Flowers

Michael Bloomberg

Selassie Atadika

Question 1771

Question 1772

Question 1773

Question 1774

$103 \over 109$

$103 \over 105$

$103 \over 102$

$103 \over 132$

Question 1775

₹3.00 lakh crore

₹2.62 lakh crore

₹1.76 lakh crore

₹2.20 lakh crore

Suppose $x : y = 2:5$; $y: z = 4: 7$. If ₹15,120 is distributed among x, y and z, then the amounts received by x, y and z, respectively, are (in ₹):

Manjit spends 40% of his income. If he saves ₹18,000, then his income (in ₹) is:

If 2 is added to each even digit and 1 is subtracted from each odd digit in the number 6154932, how many digits will appear more than once in the new number thus formed?

Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of :: ? # : LPR :: PSV: %

Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::?&nbsp; # : AND :: RWX: %

What happens if an Indian citizen voluntarily becomes a citizen of another country?

If 3.5 : 17.4 :: 14 : x, find the value of x.

Marks in statistics of 12 students are x, 28, 35, 56, 78, 63, 65, 81, 79, 83, 80, y, where x and y are the lowest and highest marks, respectively. If the range and average of the marks are 70 and 64, respectively, then the ordered pair (x, y) is:

Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern.&nbsp; EL-GN-IK GN-IP-KM

In 2021, which state launched a groundbreaking initiative aimed at eradicating mother-to-child transmission of HIV, syphilis, and Hepatitis B by 2026?

Simplify the following. $(2x+3)^2 – (x + 1)^2$.

What was the major impact of penicillin's discovery?

Who among the following received the Padma shri award in 2021 in the category of 'Others-Spiritualism' Posthumously?

What is the mean of the following distribution? Marks 19 36 60 69 85 No. of Students 63 62 59 17 70

On 26 March 2021, where was the 8 th State Level Coordination Committee (SLCC) meeting conducted by the Reserve Bank of India (RBI)?

Two pipes, A and B, can fill a tank of 7800 litres in 12 hours and 10 hours, respectively. If they are opened together, how many hours will they take to fill an empty tank of 8800 litres?

Who among the following was recognised in the 2021 TIME Earth Awards for environmental justice advocacy for marginalised communities?

From a taxi stand, two cabs start at a speed of 54 km/hr at an interval of 29 minutes, both cabs travelling in the same direction. A man coming in the opposite direction towards the taxi stand meets the cabs at an interval of 12 minutes. Find the speed (in km/hr) of the man.

If the selling price of a bed is 2-times of initial, then the profit is 10-times of initial. Find the initial profit percentage (in %).

If the ratio of two numbers is 17: 6 and the product of their LCM and their HCF is 102, then the sum of the reciprocals of the LCM and the HCF is:

What is the capital expenditure (CAPEX) allocated for Indian Railways in the financial year 2024-25?

Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::? # : AND :: RWX: %

Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. EL-GN-IK GN-IP-KM