RRB-NTPC 2016 Mathematics

Practice subject-wise previous year questions

Question 226

Question 227

Question 228

Question 229

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Question 231

Question 232

Question 233

2.16% decrease

2.16% increase

1.08% increase

1.08% decrease

Question 234

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Question 250

In a fitness park, a straight walking path is divided into three consecutive segments. The lengths of the first and third segments are 18 m and 50 m respectively. If the length of the middle segment is the mean proportional between the other two, what is its length?

A solid right circular cylinder has curved surface area \(1408\pi\) cm 2 . If the volume of the cylinder is maximum, then the ratio of radius to height is

In a parallelogram, the difference of two adjacent angles is 40°. Find the measure of the smaller angle.

Two taps can fill a cistern in 4 hours and 18 hours, respectively. A third tap can empty it in 18 hours. How long (in hours) will it take to fill one-fourth of the empty cistern if all the taps are opened together?

The price of an article increases and decreases alternately by 20% every year. If the difference between the prices at the end of the second year and third year is ₹1,920, find 40% of the price (in ₹) of the article at the end of the first year.

Simplify: \(18 - [6 \times 2 - (3 + 1)] + 7\)

The price of an article is decreased by 24%, but the daily sale of the article is increased by 33%. Find the net effect on the daily sale receipts.

If 9 notebooks cost ₹135, how much will 20 notebooks of the same type cost?

Three numbers are in the ratio 5 : 14 : 9, and their LCM is 7560. Their HCF is:

A trader sells rice, claiming 1 kg but actually gives x grams. He marks the price 20% above the cost price and gives a 10% discount on the marked price. If his overall profit is 25%, find x.

A shopkeeper sells a watch for ₹840 after giving a 30% discount. What was the marked price (in ₹) of the watch?

Five years ago, the age of Kavita was one-third of the present age of her mother. After 5 years, the sum of their ages will be 75 years. What is Kavita's present age?

Sarang invested a certain sum of money at 10% per annum. After 2 years, he received ₹178.5 as compound interest, compounded annually. Find the corresponding simple interest (in ₹) for 2 years at the same rate.

The sum of two positive numbers is 77 and their product is 1392. The positive difference between them is:

A sum of ₹2000 is invested at 20% compound interest per annum, compounded annually for 2 years. What is the compound interest earned at the end of 2 years?

The present age of Amit is twice that of his brother Sumit. Five years ago, the ratio of their ages was 5:2. What is Sumit's present age?

A shirt's price is decreased from ₹200 to ₹180. What is the percentage decrease?

The price of fuel decreases by 55%, 35% and 45% in three successive months, but increases by 40% in the fourth month. What is the percentage decrease in the price of fuel in the fourth month as compared to its original price? (Round off to 2 decimal places.)

The arithmetic mean of 25 observations is 32.6. If the arithmetic mean of the first 24 observations is 30, what is the 25 th observation?

The fourth proportional to 4, 6, and 8 is m. The third proportional to 8 and m is n. What is the value of n?

A bus travels at a uniform speed of 54 km/hr. How many meters does it cover in 1 minute?

What sum (in ₹) will earn a simple interest of ₹1,440 in 2 years at 12% per year rate of interest?

A dishonest shopkeeper professes to sell his goods at a 35% loss but uses a false balance and gains 85%. The actual weight (rounded off to one decimal place) he uses for 1 kg is: