The OSSSC RI (Revenue Inspector), ARI (Assistant Revenue Inspector), and Amin Exam 2024 are crucial examinations that require a comprehensive understanding of various Arithmetic topics. To help aspirants prepare effectively, we have compiled a set of 30 competitive-level Arithmetic MCQs covering a wide range of subjects.
Top 30 Arithmetic MCQs for OSSSC RI, ARI, Amin
These 30 General Studies Multiple Choice Questions cover a diverse range of topics relevant to the OSSSC RI, ARI, and Amin Exam 2024. Use these questions as a tool to assess your knowledge and enhance your preparation for the upcoming examination. Remember to review the explanations and expand your understanding of each topic to ensure a well-rounded preparation. Best of luck!
- Rajesh has a container with a mixture of wine and water in the ratio 4:1. He spills some of the mixture and replaces the spilled amount with water of the same quantity. If the new ratio of wine to water becomes 3:2, how much water did Rajesh add?
a) 3/5
b) 1/2
c) 1/4
d) 2/7
Answer: c) 1/4 - Chaman mixes the contents of two big cans of wine and water mixture in a big container. If the new mixture has half water and half wine, and Can 2 has a wine to water ratio of 2:3 while Can 1 has a ratio of 5:3, in what quantity did Chaman mix the contents of Can 1 and Can 2?
a) 5:3
b) 4:5
c) 5:4
d) 2:5
Answer: b) 4:5 - A milkman had a water and milk mixture in a can with a water to milk ratio of 5:7. After accidentally spilling 9 liters of the mixture and filling the can with an equal quantity of water, the new ratio becomes 9:7. How much milk did the can initially have?
a) 21 liters
b) 24 liters
c) 16 liters
d) 20 liters
Answer: a) 21 liters - Sunil initially had 140 liters of juice with 30% water in it. After selling 20 liters of the juice and adding an equal amount of lemon syrup and water, the ratio of water to lemon syrup becomes 1:2. How much water did Sunil add later on?
a) 9 liters
b) 12 liters
c) 14 liters
d) 20 liters
Answer: b) 12 liters - Rohit buys some rice at Rs. 10.40 per kg and mixes it with rice priced at Rs. 8.8 per kg. If the final mixture weighs 15 kg and costs Rs. 146.40 in total, what is the quantity of rice priced at Rs. 8.8 per kg?
a) 9 kg
b) 10 kg
c) 5 kg
d) 6 kg
Answer: d) 6 kg - A container has a mixture of coffee and sugar in the ratio 3:2. If 4 liters of the mixture is removed and replaced with sugar, the ratio becomes 3:4. How much mixture was removed?
a. 2 liters
b. 3 liters
c. 4 liters
d. 5 liters
Answer: c. 4 liters - A chemist has two solutions of acid. The first solution has acid and water in the ratio 2:3, while the second solution has acid and water in the ratio 5:6. If equal quantities of both solutions are mixed to form a new solution, what will be the ratio of acid to water in the new solution?
a. 11:15
b. 17:19
c. 1:1
d. 15:11
Answer: c. 1:1 - If A’s height is 10% more than B’s height, by how much per cent less is B’s height than that of A?a) 10%b) 11%
c) 9 1/11%
d) 10 1/9%
Answer: (c)
- If a number x is 10% less than another number y and y is 10% more than 125, then x is equal to:a) 140.55b) 150
c) 123.75
d) 143
Answer: (c)
- John got 30% of the maximum marks in an examination and failed by 10 marks. However, Paul who took the same examination got 40% of the total marks and got 15 marks more than the passing marks. What were the passing marks in the examination?a) 75b) 110
c) 85
d) 90
Answer: (a)
- If x is 10% more than y, then by what per cent is y less than x?a) 8 1/11%
b) 9 1/11%
c) 10 1/11%
d) 7 1/11%
Answer: (b) - B got 20% marks less than A. What per cent marks did A get more than B?a) 12%
b) 25%
c) 20%
d) 30%
Answer: (b) 25% - What is the average of the following set of numbers: 65, 85, 70, 90, and 105?a) 78b) 83
c) 88
d) 93
Answer: (b) 83
- The sum of 10 numbers is 550. Find their average number.a) 50b) 55
c) 60
d) 65
Answer: (b) 55
- What is the average of natural numbers from 1 to 67?a) 31b) 33
c) 34
d) 35
Answer: (c) 34
- The average of 7 consecutive numbers is 20. What is the largest of these numbers?a) 20b) 21
c) 22
d) 23
Answer: (d) 23
- The average of 10 numbers is 23. If each number is increased by 4, what will the new average be?a) 23b) 24
c) 25
d) 27
Answer: (c) 25
- The average of 50 numbers is 20. If two numbers 37 and 43 are discarded, find the average of the remaining numbers.a) 19.17b) 20
c) 20.17
d) 20.33
Answer: (a) 19.17
- What is the average of the first six multiples of 4?a) 12b) 14
c) 16
d) 18
Answer: (b) 14
- The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?a) 5b) 7
c) 9
d) 11
Answer: (c) 9
- The average weight of a group of seven boys is 56 kg. The individual weights (in kg) of six of them are 52, 57, 55, 60, 59, and 55. Find the weight of the seventh boy.a) 52 kgb) 54 kg
c) 56 kg
d) 58 kg
Answer: (b) 54 kg
- The mean of 25 numbers is 36. If the mean of the first numbers is 32 and that of the last 13 numbers is 39, find the 13th number.a) 21b) 23
c) 25
d) 27
Answer: (b) 23
- The length of a rectangle is 53 meters, while its breadth is 28 meters. The cost of covering it with a grass bed is Rs. 27 per square meter. Find the total expenditure?(A) Rs. 40,098(B) Rs. 40,048
(C) Rs. 40,058
(D) Rs. 40,088
Answer: (E) None of these
- Base of a right-angle triangle is 9 cm and its area is 81 sq cm. Find its height.(A) 36 cm(B) 9 cm
(C) 27 cm
Answer: (D) None of these
- Difference between the circumferences of two circles is 132 cm and radius of the smaller circle is 14 cm. Find the radius of the larger circle?(A) 14 cm(B) 21 cm
(C) 30 cm
Answer: (D) None of these
- Poles are to be created along the boundary of a rectangular field in such a way that distance between any two adjacent poles is 1.5 meters. The perimeter of the field is 21 meters and length and the breadth are in the ratio of 4:3 respectively. How many poles will be required?(A) 14(B) 16
(C) 15
Answer: (B) 16
- The ratio of length and breadth of rectangle is 5:2 respectively. The respective ratio of its perimeter and area is 1:3 (irrespective of the unit). What is the length of the rectangle?(A) 27 units(B) 32 units
(C) 21 units
Answer: (C) 21 units
- The length of a rectangle, which is 25 cm is equal to the length of a square and the area of the rectangle is 125 square cm less than the area of the square. What is the breadth of the rectangle?(A) 15 cm(B) 20 cm
(C) 12 cm
Answer: (C) 12 cm
- If the length of a rectangle is increased by 20% and the breadth is decreased by 10%. What will be the effect on its area?(A) 8% increase(B) 8% decrease
(C) 2% increase
(D) 2% decrease
Answer: (A) 8% increase
- The ratio of length and breadth of a rectangular plot is 71:16 respectively. The area of the plot is 17324 sq. meters. What is the perimeter of the plot?(A) 284 meters(B) 528 meters
(C) 264 meters
Answer: (B) 528 meters
