10th selected WBCS math question set for Arithmetic practice
10 WBCS math questions with answers are on number system, hcf lcm, square root, simplification, ratio, fractions, series, compound interest, clock. It should be useful for prelims of other competitive exams also.
The solution set (linked at the end) explains how to solve the questions quickly in mind.
To refresh concepts on any topic and to know how to solve the questions quickly, refer to the concept articles listed below.
Or to skip the list and take the test straightaway, click here.
Concept tutorials and articles on Arithmetic
Number system, fractions and surds
Numbers, Number system and basic arithmetic operations
Factorization or finding out factors
Fractions and decimals, basic concepts part 1
How to solve surds part 1 rationalization
How to solve surds part 2 double square root surds and surd term factoring
How to find perfect square root of integers or decimals
Ratio and proportion and mixing liquids
Arithmetic problems on mixing liquids and based ages
How to solve arithmetic mixture problems in a few steps 1
How to solve arithmetic mixture problems in a few steps 2
Percentage
Basic and rich percentage concepts
Componendo dividendo
Componendo dividendo explained
Simple interest and compound interest
Basic and rich concepts on simple interest and compound interest
Work time, work wages and pipes and cisterns
How to solve arithmetic problems on work time, work wages and pipes and cisterns
How to solve time work problems in simpler steps type 1
How to solve time work problems in simpler steps type 2
Speed time distance, train problems and boats in rivers
Basic concepts on speed time distance, train running and boats and rivers
How to solve time distance problems in a few simple steps 1
How to solve time distance problems in a few simple steps 2
Profit and loss
How to solve in a few steps profit and loss problems 1
How to solve similar problems in a few seconds profit and loss problems 2
How to solve difficult profit and loss problems in a few steps 3
How to solve difficult profit and loss problems in a few steps 4
Clocks and Calendars
How to solve Calendar problems
10th WBCS arithmetic practice question set: time to answer: 10 mins
Problem 1
a, b, c and d are four consecutive odd integers and their average is 42. What is the product of a and c?
- 1845
- 1890
- 1677
- 1860
Problem 2
The HCF and LCM of two numbers $x$ and $y$ are respectively 3 and 105. If value of $x+y=36$, then $\displaystyle\frac{1}{x}+\displaystyle\frac{1}{y}$ is,
- $\displaystyle\frac{3}{5}$
- $\displaystyle\frac{4}{35}$
- $\displaystyle\frac{1}{35}$
- $35$
Problem 3
A gardener plants 17956 trees in such a way that there are as many rows as there are trees in a row. The number of trees in a row are,
- 144
- 136
- 154
- 134
Problem 4
$\displaystyle\frac{(0.73)^3+(0.27)^3}{(0.73)^2+(0.27)^2-(0.73)\times{(0.27)}}$=?.
- $0.73$
- $1$
- $0.4087$
- $0.46$
Problem 5
The simplified value of $\displaystyle\frac{1}{1000}\left(\displaystyle\frac{1}{5}+999\displaystyle\frac{494}{495}\times{99}\right)$ is,
- 99
- 99900
- 990
- 9900
Problem 6
If $\displaystyle\frac{1}{25}:\displaystyle\frac{1}{x}::\displaystyle\frac{1}{x^2}:\displaystyle\frac{1}{78.125}$, then $x$ is,
- 1.5
- 12.5
- 2
- 3.5
Problem 7
The product of two co-primes is 117. Their LCM should be,
- 117
- 1
- equal to their HCF
- cannot be determined
Problem 8
Which pair of numbers should come next in the sequence, 9 12 11 14 13 16 15...?
- 18 21
- 18 17
- 17 18
- 14 13
Problem 9
The compound interest on Rs. 2000 for two years at 8% per annum is,
- Rs. 228.80
- Rs. 232.80
- Rs. 532.80
- Rs. 332.80
Problem 10
Reflex angle between the hands of a clock at 10.25 is,
- $180^0$
- $195^0$
- $192\displaystyle\frac{1}{2}^0$
- $197\displaystyle\frac{1}{2}^0$
To know how to solve the problems quickly in mind and detailed explanation, you should refer to the corresponding solution set, Solution to 10th WBCS Math Question set for Arithmetic Practice.
Answers to the questions
Problem 1. Answer. Option c: 1677.
Problem 2. Answer: Option b: $\displaystyle\frac{4}{35}$.
Problem 3. Answer: Option d: 134.
Problem 4. Answer: Option b: $1$.
Problem 5. Answer: Option a: 99.
Problem 6. Answer: Option b: 12.5.
Problem 7. Answer: Option a: 117.
Problem 8. Answer: Option b: 18 17.
Problem 9. Answer: Option d: Rs. 332.80.
Problem 10. Answer: Option d: $197\displaystyle\frac{1}{2}^0$.
Question and Solution sets on WBCS Arithmetic
10 WBCS Math Questions - 12th Solved Arithmetic Practice Set
Solution to 11th WBCS Math Question set for Arithmetic Practice
11th WBCS Math Question set for Arithmetic Practice
Solution to 10th WBCS Math Question set for Arithmetic Practice
10th WBCS Math Question set for Arithmetic Practice
Solution to 9th WBCS Math Question set for Arithmetic Practice
9th WBCS Math Question set for Arithmetic Practice
Solution to 8th WBCS Math Question set for Arithmetic Practice
8th WBCS Math Question set for Arithmetic Practice
Solution to 7th WBCS Math Question set for Arithmetic Practice
7th WBCS Math Question set for Arithmetic Practice
Solution to 6th WBCS Math Question set for Arithmetic Practice
6th WBCS Math Question set for Arithmetic Practice
Solution to 5th WBCS Math Question set for Arithmetic Practice
5th WBCS Math Question set for Arithmetic Practice
Solution to 4th WBCS Math Question set for Arithmetic Practice
4th WBCS Math Question set for Arithmetic Practice
Solution to 3rd WBCS Math Question set for Arithmetic Practice
3rd WBCS Math Question set for Arithmetic Practice
Solution to 2nd WBCS Math Question set for Arithmetic Practice
2nd WBCS Math Question set for Arithmetic Practice
WBCS Main level Arithmetic Solution set 1
WBCS Main level Arithmetic Question set 1