3rd selected WBCS math question set for Arithmetic practice
10 WBCS math questions with answers are on simplification, time work, decimals, HCF, ratio, profit loss, number system, average, unitary method.
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
3rd WBCS arithmetic practice question set: time to answer: 10 mins
Problem 1
The simplified value of $\displaystyle\frac{1}{56}+\displaystyle\frac{1}{72}+\displaystyle\frac{1}{90}+\displaystyle\frac{1}{110}+\displaystyle\frac{1}{132}$ would be,
- $\displaystyle\frac{5}{84}$
- $\displaystyle\frac{1}{12}$
- $\displaystyle\frac{1}{84}$
- $\displaystyle\frac{1}{28}$
Problem 2
A man cultivates $\displaystyle\frac{1}{3}$rd of a land in 10 days while a second man cultivates $\displaystyle\frac{2}{5}$th of the same land in 6 days. In how many days would the two cultivate $\displaystyle\frac{4}{5}$th of this land if they work together?
- 4 days
- 10 days
- 5 days
- 8 days
Problem 3
The value of $(0.\overline{1})^2\left[1-9\times{(0.1\overline{6})^2}\right]$ is,
- $-\displaystyle\frac{1}{162}$
- $\displaystyle\frac{1}{109}$
- $\displaystyle\frac{1}{108}$
- $\displaystyle\frac{7696}{10^6}$
Problem 4
The least number of square tiles required to pave the floor of a room 15m 17cm long and 9m 2cm broad is,
- 814
- 902
- 738
- 656
Problem 5
If $2A=3B=4C$, then $A : B : C$ is,
- 4 : 3 : 2
- 6 : 4 : 3
- 2 : 3 : 4
- 3 : 4 : 5
Problem 6
By selling an item for Rs.350 instead of Rs.400, the percentage loss increases by 5%. The cost price of the item is,
- Rs.1050
- Rs.1000
- Rs.433
- Rs.417.50
Problem 7
The average of the first 100 natural numbers is,
- 50.5
- 51
- 50
- 51.5
Problem 8
The bell of a wall-clock requires 3 seconds to ring 5 times. The time required for the bell to ring 6 times is,
- $3\displaystyle\frac{1}{2}$ seconds
- $4$ seconds
- $5$ seconds
- $3\displaystyle\frac{3}{4}$ seconds
Problem 9
Two numbers are in the ratio of 3 : 5. If each number is increased by 10, the ratio becomes 5 : 7. The numbers are,
- 3, 5
- 7, 9
- 15, 25
- 13, 22
Problem 10
The area of a square is equal to the area of a circle. The ratio between a side of the square and the radius of the circle is,
- $1 : \sqrt{\pi}$
- $\sqrt{\pi}:1$
- $\pi : 1$
- $1:\pi$
Solutions to these problems with conceptual explanation, and how to solve the problems easily and quickly, are available in companion solution set,
Solution to WBCS Math Question set for Arithmetic Practice 3.
Answers to the questions
Problem 1. Answer: Option a: $\displaystyle\frac{5}{84}$.
Problem 2. Answer: Option d: 8 days.
Problem 3. Answer: Option c: $\displaystyle\frac{1}{108}$.
Problem 4. Answer: Option a: 814.
Problem 5. Answer: Option b: 6 : 4 : 3.
Problem 6. Answer: Option b: Rs.1000.
Problem 7. Answer: Option: a: 50.5.
Problem 8. Answer: Option d: $3\displaystyle\frac{3}{4}$ seconds.
Problem 9. Answer: Option c: 15, 25.
Problem 10. Answer: Option: b: $\sqrt{\pi}:1$.
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