10th WBCS arithmetic practice question set

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.

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Concept tutorials and articles on Arithmetic

Number system, fractions and surds

Numbers, Number system and basic arithmetic operations

Factorization or finding out factors

HCF and LCM

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

Ratio and proportion

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 Clock problems

How to solve Calendar problems

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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?

1. 1845
2. 1890
3. 1677
4. 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,

1. $\displaystyle\frac{3}{5}$
2. $\displaystyle\frac{4}{35}$
3. $\displaystyle\frac{1}{35}$
4. $35$

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,

1. 144
2. 136
3. 154
4. 134

Problem 4

$\displaystyle\frac{(0.73)^3+(0.27)^3}{(0.73)^2+(0.27)^2-(0.73)\times{(0.27)}}$=?.

1. $0.73$
2. $1$
3. $0.4087$
4. $0.46$

Problem 5

The simplified value of $\displaystyle\frac{1}{1000}\left(\displaystyle\frac{1}{5}+999\displaystyle\frac{494}{495}\times{99}\right)$ is,

1. 99
2. 99900
3. 990
4. 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. 1.5
2. 12.5
3. 2
4. 3.5

Problem 7

The product of two co-primes is 117. Their LCM should be,

1. 117
2. 1
3. equal to their HCF
4. cannot be determined

Problem 8

Which pair of numbers should come next in the sequence, 9 12 11 14 13 16 15...?

1. 18 21
2. 18 17
3. 17 18
4. 14 13

Problem 9

The compound interest on Rs. 2000 for two years at 8% per annum is,

1. Rs. 228.80
2. Rs. 232.80
3. Rs. 532.80
4. Rs. 332.80

Problem 10

Reflex angle between the hands of a clock at 10.25 is,

1. $180^0$
2. $195^0$
3. $192\displaystyle\frac{1}{2}^0$
4. $197\displaystyle\frac{1}{2}^0$

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.

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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: $197\displaystyle\frac{1}{2}^0$.

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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

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