RRB-NTPC 2016 Mathematics

Practice subject-wise previous year questions

Question 801

Question 802

100 \(\pi\) cm 2

300 \(\pi\) cm 2

400 \(\pi\) cm 2

200 \(\pi\) cm 2

Question 803

Question 804

Question 805

Question 806

Question 807

4 \(\sqrt3\)

6 \(\sqrt2\)

3 \(\sqrt2\)

9 \(\sqrt3\)

Question 808

Question 809

Question 810

Question 811

It decreases by 5

It decreases by 2

It stays the same

It increases by 2

Question 812

Question 813

Question 814

Question 815

17 \(\tfrac79\) years

19 \(\tfrac79\) years

16 \(\tfrac79\) years

18 \(\tfrac79\) years

Question 816

Question 817

Question 818

Question 819

Question 820

Question 821

Question 822

Question 823

Question 824

Question 825

A shopkeeper sells a watch at a loss of 10%. If he had sold it for ₹450 more, he would have made a profit of 5%. What is the cost price of the watch?

If a sphere with radius 10 cm is painted, but 25% of its surface area is masked and not painted, what is the painted area?

A shopkeeper fixes the marked price of an item 165% above its cost price. What percentage of discount on marked price should be allowed to gain 112%?

A, B and C are three batsmen. The ratio of runs scored by them in a certain match was A : B = 15 : 17 and B : C = 14 : 19. At the end of the match, they scored 1542 runs. Find the number of runs scored by A.

A car travels 120 km at 40 km/h, 120 km at 60 km/h, and 100 km at 80 km/h. What is the average speed of the car for the whole journey?

The HCF of two numbers is 8, and their LCM is 240. If the sum of the two numbers is 88, what are the numbers?

ABC is an equilateral triangle with side 24 cm and AD is the median. If G is the centroid of the triangle ABC, find the length (in cm) of GD.

If the interest on a sum of ₹y at 10% per annum compounded annually for 2 years is ₹630, then the total amount payable at the end of the two-year period will be _________.

If the 8-digit number 79243p25 is divisible by 11, then the minimum value of p is:

In a smart city, the number of electric vehicles increased by 18% in 2021 and 22% in 2022. What is the total percentage increase in electric vehicles over the two years?

If the arithmetic mean of five numbers is 20 and one number is changed from 10 to 20, what happens to the mean?

Riya, Kabir, and Sana start a business together. Riya invests ₹13500 for 8 months, Kabir invests ₹21000 for 6 months, and Sana invests ₹18000 for 12 months. At the end of the year, they earn a total profit of ₹12,600. What is Kabir's share of the profit (in ₹)?

The weighted average marks of a student in Physics, Chemistry and Mathematics are 68. The weightages of the subjects Physics, Chemistry and Mathematics are in the ratio 3 : 2 : 5. If the student scored 60 in Physics and 70 in Chemistry, then find the marks in Mathematics.

The present ages of P and Q are in the ratio 4 : 5. Eight years ago, the ratio of their ages was 2 : 3. The harmonic mean of their present ages is

Three numbers are in the ratio 3 : 2 : 11, and their LCM is 3564. Their HCF is:

A car travels a distance of 540 km. For the first 3 hours, it travels at a speed of 80 km/h, and for the remaining hours, it reduces its speed to 60 km/h. Find the total time taken by the car to cover the entire distance.

The sum of two digits of a 2-digit number is 9. If the number obtained by interchanging the digits exceeds the original number by 27, find the number.

Priya lent ₹920 to her friend at 5% per annum simple interest for 3 years. How much simple interest does she earn in this period?

Which single digit should replace the blank in the number 1_36 so that the number is divisible by 9?

The population of a town decreased from 8,000 to 7,200 in one year. What is the percentage decrease?

X can finish a job in 20 days. Y can complete the same job in 15 days. If X and Y work together for 5 days and X leaves, how long will Y take to finish the remaining work?

A vendor uses a 50 g stone in place of a 60 g weight while selling salt. If he sells the salt at the cost price per kilogram, what is his profit percentage on the transaction?

A person walks 40 km at a speed of 5 km/hr, then runs 30 km at a speed of 10 km/hr. What is the ratio of walking time to running time?

Suppose the ratio of income to expenditure is 8 : 5. If income rises by 40% and expenditure falls by 10%, and the initial expenditure is ₹10,000, what is the amount (in ₹) of saving after these changes?