## 3rd selected WBCS math question set for Arithmetic practice

Solve WBCS Arithmetic question set 3 in 10 minutes. Verify from answers. To solve this quick you have to solve the questions in mind. Learn from solutions.

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.

### WBCS arithmetic question set 3: 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,

- $1 : \sqrt{\pi}$
- $\sqrt{\pi}:1$
- $\pi : 1$
- $1:\pi$

* Learn to solve the questions in mind* from the companion solution set,

* Solution to WBCS Math Question set for Arithmetic Practice 3*.

### Answers to the WBCS arithmetic question set 3

**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**