Important IBPS RRB Clerk Numerical Ability Topics – Practice Questions Included

The IBPS RRB 2021 notification is not out yet. As far as previous year vacancies are concerned there were 4624 vacancies. Those who are waiting for this year’s notification must start giving free mock test as a part of their preparation strategy. This year the recruitment notification got delayed because of the COVID-19 pandemic which is still prevailing in the country. The IBPS calendar 2021 has been released earlier this year for which we are giving the details of the tentative exams below.

Numerical Ability is one of the major sections of IBPS RRB Clerk Prelims exam. As far as the RRB Clerk Prelims 2021 exam pattern there are only two sections including Reasoning and Numerical Ability. In this article we will list down few important numerical ability topics for IBPS RRB Clerk Prelims 2021 exam and will also include their practice questions. Let’s first take a strategic look at the RRB Clerk Prelims 2021 exam pattern and important dates first.

IBPS RRB Tentative Exam Dates 2021

Sr. No.	Activity	IBPS RRB Exam Dates
1	Online Examination – Preliminary	Officer Scale I and Office Assistants : 01.08.2021, 07.08.2021, 08.08.2021, 14.08.2021 and 21.08.2021
2	Single Examination	Officers Scale II & III : 25.09.2021
2	Online Examination – Main	Officer Scale I : 25.09.2021 Office Assistants : 03.10.2021

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IBPS RRB Office Assistant 2021 Prelims Exam Pattern

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Keeping in mind the above exam pattern, candidates have to give equal weightage to both the reasoning as well as numerical ability sections. However, here we are with few important numerical ability topics along with their practice questions.

RRB Clerk Prelims 2021 Numerical Ability Important Topics

• Data Interpretation
• Mixture & alligations
• Simple and compound interest
• Simplification & Approximation

These are few important topics and are to be revised thoroughly. Mentioned below are practice questions related to these important topics.

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Important preparation tips for numerical ability

• First and the foremost thing is to know the IBPS RRB Clerk syllabus. Get familiar with each and every topic. In case candidates need to update their quant and reasoning skills we have Lockdown warm-up sectional tests that aspirants can attempt for free.
• Take IBPS RRB Clerk Prelims 2021 free mock test and analyze your performance for your weak and strong areas.
• Create a proper timetable or a study plan in order to stay organized with each and every topic.
• Learn and clarify the concepts from important books and preparation resources that are listed in here.
• Here are few important preparation tips to crack RRB Prelims 2021 in first attempt.

Let’s now check out few practice questions related to each of the important topics mentioned above for RRB Clerk Prelims 2021 exam.

RRB Clerk Prelims Numerical Ability – Data Interpretation Practice Questions

Data Interpretation forms a major part of the Quantitative Aptitude section for all major banking exams. In the exact sense Data Interpretation means making sense out of the numerical that has been collected and analyzed. As far as data interpretation questions are concerned majority of questions asked from DI are based on the following:

• Percentages
• Ratio
• Averages

In order to attempt DI questions in the most accurate manner it is extremely important that the above mentioned concepts are clear. 

Directions: Answer the questions based on the information given below. The bar graph given below shows the number of male visitors and female visitors to Sukhdev Da Dhaba on Monday, Tuesday, Wednesday, Thursday and Friday, respectively.

Common Solution:

Days	Male Visitors	Female visitors	Total visitors
Monday	160	140	300
Tuesday	200	120	320
Wednesday	180	220	400
Thursday	240	180	420
Friday	220	160	380

Practice Quant Topic Wise Quizzes

1. What is the average of number of male visitors visiting on each of the given day?

a) 200

b) 160

c) 150

d) 180

e) None of these

Ans: a

Solution:      

Desired average = (160 + 200 + 180 + 240 + 220)/5 = 200

Hence, option a.

2. What is the ratio of male visitors on Monday and Tuesday together to female visitors on Wednesday and Thursday together?

a) 8:9

b) 9:10

c) 5:7

d) 3:5

e) None of these

Ans: b

Solution:

Desired ratio = (160 + 200):(220 + 180) = 360:400 = 9:10

Hence, option b

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RRB Clerk Prelims Numerical Ability – Mixture and Alligations Practice Questions

Here we are talking about Mixture and Alligations which is more or less asked in almost every banking exam. The rules of mixture and alligations basically help the candidates to find out proportion between the two commodities given. These are two different terms and need to be understood differently.

1. A vessel contains 540 litres mixture of honey, milk and water in the ratio of 3:4:5 respectively. 15 litres of honey and 20 litres of milk is added to this mixture. Find the new ratio of honey, milk and water in the vessel.

a. 7:2:8

b. 2:3:5

c. 6:8:9

d. 4:5:3

e. 7:8:9

Answer: c)

Solution:

Quantity of honey in vessel initially = [3/ (3 + 4 + 5)] × 540 = 135 litres

Quantity of milk in vessel initially = [4/ (3 + 4 + 5)] × 540 = 180 litres

Quantity of water in vessel initially = [5/ (3 + 4 + 5)] × 540 = 225 litres

Therefore, required ratio = (135 + 15): (180 + 20): 225 = 150: 200: 225 = 6: 8: 9

Hence, option c.

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3. A vessel contains 240 litres mixture of milk and water in the ratio of 5:3. How much water should be added to this vessel so that ratio of milk and water changes to 1:1?

a. 72 litres

b. 40 litres

c. 60 litres

d. 54 litres

e. 45 litres

Answer: c)

Solution:

Amount of milk in vessel = (5/8) × 240 = 150 litres

Amount of water in vessel = (3/8) × 240 = 90 litres

Let, required amount of water be x litres

According to question,

150: (90 + x) = 1: 1

150 = 90 + x

x = 150 – 90

x = 60 litres

Hence, option c.

Practice Quant Topic Wise Quizzes

RRB Clerk Prelims Numerical Ability – Simplification & Approximation Practice Questions

Questions on this topic are perhaps the easiest in the complete quantitative ability section. You need to follow the BODMAS rule when attempting these questions. You should go from left to right on BODMAS rule when attempting simplification question. You should be extremely good in approximation and rounding off numbers. Mentioning below are few practice questions for RRB Clerk Prelims 2021.

2. What will come in the place of question mark (?) in the given expression?

45% of 480 + 18² = ?²  – 17² + 10²

a. 25

b. 30

c. 27

d. 32

e. 22

Answer: c)

Solution:

45% of 480 + 18² = ?²  – 17² + 10²

?² – 289 + 100 = 0.45 × 480 + 324

?² – 189 = 216 + 324

?² = 540 + 189

 ?= √729

 ? = 27

Hence, option c.

Practice Quant Topic Wise Quizzes

3. What will come in the place of question mark (?) in the given expression?

(210 ÷ 14) × 15 + 25² = ?² – 20% of 555

a. 27

b. 31

c. 36

d. 24

e. 18

Answer: b)

Solution:

 (210 ÷ 14) × 15 + 25² = ?² – 20% of 555

?² – (1/5) × 555 = 15 × 15 + 625

?² – 111= 225 + 625

?² =850 + 111

? = √961= 31

Hence, option b.

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RRB Clerk Prelims Numerical Ability – Simple/Compound Interest Practice Questions

1. A certain sum of money invested at 20% per annum for 2 years compounded annually, but if interest would have been compounded half yearly on the same amount, then Rs. 241 more interest would have been received. Find the sum of money invested.

a. Rs. 10000

b. Rs. 8000

c. Rs. 12000

d. Rs. 7500

e. Rs. 10500

Answer: a

Solution:

Let the certain amount of money invested be Rs.‘P’.

When interest is compounded yearly,

So, CI = P(1 + 20/100)² – P = P[(1 + 20/100) ² – 1] = P(1.44 – 1) = 0.44 × P

When interest is compounded half yearly,

And, CI = P(1 + 10/100) ⁴ – P = P[(1.1) ⁴ – 1] = P(1.4641 – 1) = 0.4641 × P

According to question, 0.4641×P – 0.44×P = 241

0.0241×P = 241

P = 241/0.0241 = 10000

Therefore, the certain amount of money invested is Rs. 10000.

Hence, option a.

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This brings us to the end of this article. So, keep practicing these numerical ability questions and ace the quant section for the upcoming RRB Clerk Prelims 2021 examination.