Are you preparing for the OSSSC RI, ARI, Amin, SFS, or ICDS Supervisor exams and looking to conquer the arithmetic section? Arithmetic is a crucial part of these exams, testing your ability to solve numerical problems efficiently. To aid your preparation, here are the top 30 multiple-choice questions (MCQs) covering various arithmetic concepts commonly encountered in these exams:
Top 30 Arithmetic MCQS For OSSSC RI,ARI, Amin, SFS, ICDS Supervisor
These multiple-choice questions cover a wide range of arithmetic concepts, including basic operations, percentages, fractions, geometry, and more. Practice solving them to strengthen your arithmetic skills and boost your confidence for the upcoming OSSSC RI, ARI, Amin, SFS, or ICDS Supervisor exams. Good luck!
- A can do a piece of work in 10 days, and B can do the same work in 20 days. With the help of C, they finished the work in 4 days. C can do the work alone in how many days?
A) 5 days
B) 10 days
C) 15 days
D) 20 daysAnswer: A) 5 days
- A can complete a piece of work in 12 days, while B can complete it in 16 days. If A started the work alone, after how many days should B join him so that the work is finished in 9 days?
A) 2 days
B) 3 days
C) 4 days
D) 5 daysAnswer: D) 5 days
- A and B can do a piece of work in 4 days, while C and D can do the same work in 12 days. In how many days will A, B, C, and D do it together?
A) 12 days
B) 4 days
C) 3 days
D) 2 daysAnswer: C) 3 days
- A and B together can complete a piece of work in 40 days, while B and C can do it in 120 days. If B alone can complete it in 180 days, how many days will A and C take to do it together?
A) 45 days
B) 22.5 days
C) 25 days
D) 18 daysAnswer: A) 45 days
- A, B, C, and D can do a piece of work in 20 days. If A and B can do it together in 50 days, and C alone in 60 days, how many days will D alone take to do it?
A) 120 days
B) 200 days
C) 150 days
D) 90 daysAnswer: D) 90 days
- A, B, and C can complete a piece of work in 8 days. B and C together can finish it in 24 days. If B alone can complete it in 40 days, how many days will it take for C to complete the work alone?
A) 25 days
B) 24 days
C) 60 days
D) 20 daysAnswer: C) 60 days
- A and B agree to complete a piece of work for Rs. 450. A can complete it in 20 days, and B can complete it in 40 days. With the help of C, they finish it in 8 days. How much should C be paid?
A) Rs. 180
B) Rs. 40
C) Rs. 120
D) Rs. 60Answer: A) Rs. 180
- Daku and Tamatar can do a piece of work in 70 and 60 days respectively. They begin the work together, but Daku leaves after some days, and Tamatar finishes the remaining work in 47 days. After how many days did Daku leave?
A) 14 days
B) 16 days
C) 18 days
D) 10 daysAnswer: D) 10 days
- Ajay and Vijay agree to complete a piece of work for Rs. 480. Ajay can complete it in 75 days, while Vijay can complete it in 40 days. With the help of Pradeep, they finish it in 25 days. How much should Pradeep get for his work?
A) Rs. 40
B) Rs. 20
C) Rs. 360
D) Rs. 100Answer: B) Rs. 20
- If A, B, and C together complete a piece of work in 12 days, while B and C together take 24 days, how many days will C alone take to finish the work?
A) 25 days
B) 20 days
C) 15 days
D) 30 daysAnswer: A) 25 day
- A train running at the speed of 56 km/hr crosses a pole in 18 seconds. What is the length of the train?
A) 200m
B) 250m
C) 325m
D) 280mAnswer: D) 280m
- Time is taken by two trains running in opposite directions to cross a man standing on the platform in 28 seconds and 18 seconds respectively. It took 26 seconds for the trains to cross each other. What is the ratio of their speeds?
A) 2:3
B) 4:1
C) 1:4
D) 3:1Answer: B)4:1
- It takes a 360 m long train 12 seconds to pass a pole. How long will it take to pass a platform 900 m long?
A) 40 seconds
B) 32 seconds
C) 42 seconds
D) 50 seconds
Answer: C) 42 seconds - A train 300 m long is running at a speed of 54 km/hr. In what time will it pass a bridge 150 m long?
A) 32 seconds
B) 30 seconds
C) 51 seconds
D) 16 secondsAnswer: B) 30 seconds
- Q1: A rectangular tank 10 m × 8 m is being filled with water through a pipe of diameter 20 cm at a rate of 10 m/s. In what time (in minutes) will the water level rise by 5 meters?
A) 25 minutes
B) 20 minutes
C) 30 minutes
D) 15 minutes
Answer: C) 30 minutes - The dimensions of a rectangular box are 12 cm, 8 cm, and 6 cm. If 1 cubic cm of the material used in the box weighs 2 g, find the weight of the box.
A) 3.84 kg
B) 4.8 kg
C) 2.88 kg
D) 6.4 kg
Answer: B) 4.8 kg - A cube of edge 10 cm is immersed completely in a rectangular vessel containing water. If the dimensions of the base of the vessel are 15 cm × 10 cm, find the rise in water level.
A) 7.5 cm
B) 8 cm
C) 8.5 cm
D) 9 cm
Answer: B) 8 cmQ4: A conical vessel, whose internal radius is 8 cm and height 40 cm, is full of some liquid. The contents of this vessel are emptied into a cylindrical vessel with an internal radius of 6 cm. Find the height to which the liquid rises in the cylindrical vessel.
A) 16 cm
B) 18 cm
C) 20 cm
D) 22 cm
Answer: A) 16 cm - How many spherical balls can be made out of a lead cylinder 20 cm high and with base radius 5 cm, each ball being 2 cm in diameter?
A) 200
B) 250
C) 225
D) 275
Answer: C) 225Q6: If the radius of a sphere is increased by 20%, find the increase percent in volume and the increase percent in the surface area.
A) 44%
B) 48%
C) 60%
D) 72%
Answer: B) 48% - Two metallic right circular cones having their heights 5 cm and 6 cm and the radii of their bases 3 cm each, have been melted together and recast into a sphere. Find the diameter of the sphere.
A) 7 cm
B) 8 cm
C) 9 cm
D) 10 cm
Answer: C) 9 cm - A hemispherical bowl of internal radius 12 cm contains a liquid. This liquid is to be filled into cylindrical shaped small bottles of diameter 4 cm and height 6 cm. How many bottles will be needed to empty the bowl?
A) 18
B) 24
C) 36
D) 48
Answer: B) 24 - The cost of apples is increased by 20% and then decreased by 20%. What is the net percentage decrease?
A. 3%
B. 4%
C. 5%
D. 6%
Answer: B. 4% - Shiva’s monthly salary is Rs. 75,000. After various expenses and savings, he donates the rest to an orphanage. What percentage of his income does he donate?
A. 3%
B. 4%
C. 6%
D. 8%
Answer: B. 4% - An IT company held a recruitment drive at IIT Delhi. After the written examination, 80% of the students cleared the cutoff for the interview. Out of these, 70% were selected and 153 students were in the waiting list. If 9% of the students couldn’t fulfill the eligibility criteria, find the total number of students who took part in the examination (including those who couldn’t fulfill the criteria).
A. 678
B. 400
C. 700
D. 560
Answer: C. 700 - Two jars initially contain equal quantities of 40% alcohol. Surbhi increases the concentration of the first jar to 50% by adding extra pure alcohol, while Sonali changes the concentration of the second jar to 50% by replacing a certain quantity of the solution with pure alcohol. By what percentage is the quantity of alcohol added by Surbhi more than replaced by Sonali?
A. 10%
B. 20%
C. 30%
D. 50%
Answer: B. 20% - The marked price of an article is ₹2500. If the shopkeeper offers two successive discounts, each of x% on the marked price is equal to a single discount of ₹1056. If he offers only one discount of x% on the marked price, what will be the new selling price of the article?
A. ₹1800
B. ₹1750
C. ₹1900
D. ₹2150
Answer: C. ₹1900 - Mr. Mehta earns ₹16,200 per month. In the first month, he spends 50% on food, 40% on clothing, and saves 11.11% of what he has spent. In the next two months, he saves 9.09% of what he has spent (spending 57.33% of his income on food). In the fourth month, he spends his entire salary on celebrating an occasion. From the fifth month onwards, he saves different percentages of his new income each month. What is the ratio between the average of the savings for the two months with the highest savings to the average of the savings for the two months with the lowest savings?
A. 2.67
B. 5.33
C. 3.33
D. None of these
Answer: B. 5.33 - Given that : M=(a+b+c)/3. If a, b, and c are all increased by 10%, what will be the percentage change in M?
A. 15%
B. 20%
C. 10%
D. 25%
Answer: C. 10% - Shyam’s monthly salary is Rs. 30,360. His sister’s salary is 10% more than his, and his brother’s salary is 9.09% more than his sister’s. If his wife’s salary is 15% less than the combined salary of his sister and brother, what is the salary of his wife?
A. Rs. 30,360
B. Rs. 36,432
C. Rs. 33,396
D. None of these
Answer: C. Rs. 33,396 - A company has 120 machines of equal efficiency in its production hub. The annual manufacturing expenses are Rs. 4,80,000 and the establishment charges are Rs. 1,50,000. The annual output of the company is Rs. 9,60,000. The annual output and manufacturing expenses are directly proportional to the number of machines that are operational. The shareholders get 20% of the profit. Owing to a lockdown due to the Corona virus, this year, only 91.67% machines were operational. What is the percentage decrease in the amount distributed to shareholders?
A. 8.33%
B. 10%
C. 12.12%
D. 13.33%
Answer: C. 12.12% - A big cube is formed by rearranging 275 colored and 68 non-colored similar smaller cubes in such a way that the exposure of the colored cubes to the outside is minimum. What percentage of the exposed cubes on the surface are colored?
A. 93.54%
B. 51.02%
C. 43.73%
D. 52.43%
Answer: B. 51.02%
