5th selected WBCS math question set for Arithmetic practice
10 WBCS math questions with answers are on ratio, componendo dividendo, LCM, Simplification, simple geometry, decimals, time work, continued square root. 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
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.
Now let us get down to solving the question set with your time watch on.
5th WBCS arithmetic practice question set: time to answer: 10 mins
Problem 1
The product of two numbers is 1575 and their division is $\displaystyle\frac{7}{9}$. The two numbers then are,
- 45, 35
- 36, 35
- 35, 27
- 81, 63
Problem 2
Two pipes A and B can fill a cistern in 6 minutes and 7 minutes respectively. The two pipes are opened alternately for 1 minute each starting with pipe A. In what time will they fill the cistern?
- $1\displaystyle\frac{1}{4}$ minutes
- $6\displaystyle\frac{3}{7}$ minutes
- $5$ minutes
- $5\displaystyle\frac{2}{3}$ minutes
Problem 3
Value of $\sqrt{20+\sqrt{20+\sqrt{20+.........}}}$ is,
- 5
- 2
- 3
- -4
Problem 4
If $a:b=3:4$, then $(7a+3b):(7a-3b)$ is,
- 5 : 2
- 4 : 3
- 11 : 3
- 37 : 19
Problem 5
The value of $(997)^2+(998)^2+(999)^2 -$
$\hspace{30mm} 997\times{998} - 998\times{999}-999\times{997}$ is,
- 1
- 2
- 3
- 0
Problem 6
If the sides of a triangle are in the ratio $3:4:5$, the largest angle of the triangle is,
- $75^0$
- $90^0$
- $120^0$
- $50^0$
Problem 7
The largest possible length that can be used for measuring exactly the three lengths, 7m, 3m 85cm and 12m 95cm is,
- 25cm
- 15cm
- 42cm
- 35cm
Problem 8
Area of a square field is 6050 sq m. What is the length of the diagonal?
- 110m
- 120m
- 135m
- 112m
Problem 9
Value of $0.\overline{3}+0.\overline{4} +0.\overline{7}+0.\overline{8}$ is,
- $2.4$
- $2.\overline{4}$
- $2.44$
- $2.444$
Problem 10
40 men take 8 days to earn Rs.2000. How many men will earn Rs.200 in 2 days?
- 16
- 10
- 12
- 1
Related detailed solution set
Refer to the companion Solution to WBCS Math Question set for Arithmetic Practice 5 for detailed explanation of the concepts and quick methods of solution.
Answers to the questions
Problem 1. Answer: Option a: 45, 35.
Problem 2. Answer: Option b: $6\displaystyle\frac{3}{7}$ minutes.
Problem 3. Answer: Option a: 5.
Problem 4. Answer: Option c: $11:3$.
Problem 5. Answer: Option c: 3.
Problem 6. Answer: Option b: $90^0$.
Problem 7. Answer: Option: d: 35cm.
Problem 8. Answer: Option a: 110m.
Problem 9. Answer: Option b: $2.\overline{4}$.
Problem 10. Answer: Option: a: 16.
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