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The CAT 2025 exam for MBA admissions is expected to be scheduled for 30th November 2025. In this 60-day, CAT 2025 preparation guide series by Careers360, we’ll discuss strategies for tackling Permutation and Combination problems on Day 37, helping you prepare effectively and succeed in the CAT entrance test.
CAT 2025: VARC, DILR, and Quant: MCQs & Weightages | Chapter-wise MCQs
CAT 2025 Study Material: VARC | Quantitative Aptitude | 60 Days Study Material by Experts
Online MBA: Guide | Top Online MBA Universities India | Online MBA at IIMs
This article covers Permutation and Combination problems, Syllogism questions with answers, and tips for understanding comparison in VARC. Permutation and combination problems are often considered challenging, and many aspirants struggle with them. They are hard to solve and often very tough to crack with proper guidance and strategy. To aid your preparation, we've included permutation and combination examples with answers, as well as previous years' questions (PYQs) for practice.
CAT number system questions based on factors are regularly asked in the CAT exam and other MBA entrance examinations.
Questions about factors are of the form of
To find the number of all factors
To find the number of even factors
To find the number of odd factors
To find the number of factors of multiple of some value (Value will be given)
To find the number of factors which are perfect squares/perfect cubes etc
To find the number of Co-prime factors
To find the sum of factors
To find products of all factors etc.
Number of ways of writing a number N as a product of two numbers?
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Important Formula for CAT number system questions
Number of factors:
Do Prime factorization first
N = pa × pb × rc × … where p, q, r are prime numbers; a, b, c are positive integers
The number of factors of N= (a+1)(b+1)(c+1)…
Sum of factors
Do prime factorisation first.
N = pa × qb × rc × … where p, q, r are prime numbers; a, b, c are positive integers
Sum of factors = (pa+1-1/p-1) (qb+1-1/q-1) (rc+1-1/r-1)
Trailing Zeroes and Exponent of a prime number:
Trailing zeroes give the number of zeroes at the end of the number.
For example, 54600 has two trailing zeroes.
In a product, a pair of 2 and 5 forms one trailing zero. This concept is used to find the number of trailing zeroes.
From this topic following types of questions were asked:
Find the trailing zeroes in 54! etc
Find the trailing zeroes in x3b x5c etc
Find the highest power of 7 in 200! etc
The two previous year CAT questions as per the number system CAT Syllabus are given below:
Q1. How many factors of 24 × 35 × 104 are perfect squares which are greater than 1? [TITA- CAT Question Paper 2019]
Solution:
N = 24 × 35 × 104 = 24 × 35 × 24 x 54 = 28 × 35 × 54
Perfect square factors will be formed only for even (including 0) powers of prime factors.
Powers of 2 for which perfect square factors will be found for = 0, 2, 4, 6, 8 (5 ways)
Powers of 3 for which perfect square factors will be found for = 0, 2, 4 (3 ways)
Powers of 5 for which perfect square factors will be found for = 0, 2, 4 (3 ways)
Total number of perfect square factors will be = 5 x 3 x 3 = 45
Total number of perfect square factors greater than 1 will be = 45 – 1= 44
So, the answer is 44.
Q2. What is the highest power of 12 that divides 54!
[Based On CAT Question Paper ]
25
26
30
4
Solution: A
12 = 22 x3, so we need to count the highest power of 2 and highest power of 3 that will divide 54!
The highest power of 2 divides 54! = [54/2] + [54/4] + [54/8] + [ 54/16] + [54/32]
= 27 + 13 + 6 + 3 + 1 = 50, where [x] ? greatest integer function.
Highest powers of 4 that divides 54! = 50/2 = 25
Highest power of 3 that divides 54! = [54/3] + [54/9] + [54/27] = 18 + 6 + 2 = 26, where [x] ? greatest integer function.
So, the highest power of 12 that divides 54! = min (25, 26) = 25.
Prerequisite:
To prepare for the number system for CAT exam according to the number system CAT syllabus, a student must have knowledge of
Prime, Composite and Co-primes
Even and Odd numbers
Sum of Geometric Progression
Exponents
Factorials
Tips On CAT Preparation For Number System (Factors and Trailing Zeroes)
Find the number of 5s to find the trailing zeroes is n! as the number of 2s is always greater than the number of 5s.
Eg: number of trailing zeros in 100! = [100/5] + [100/25] = 20 + 4 =24 where, [x] is the greatest integer function.
So, we can write the number of trailing zeroes in n! = [n/5] + [n/25] + [n/125] + ……….
Product of all factors of N = N (no of factors/2)
To find the even factors, divide the given number by 2 and find the number of total factors of the quotient.
Apply the concepts to practice Number System questions.
Practice previous year CAT questions on number system
1. Learn the concept of factors and Multiples from class 9 Mathematics NCERT (For Theory)
Arun Sharma: A Quantitative Approach for CAT (6th Edition)
Kailasha Online Learning Classroom
MASTER Number System for CAT and GMAT by Nishit K Sinha.
Sample Papers
CAT previous year papers
In previous articles, we have covered DI based on Bar graphs, Pie charts and Line graphs. In this article, we will deal with data represented in the form of a table for the CAT exam. Data interpretation is a must-come topic in the CAT Exam and other management entrance exams.
In this section, we will discuss the basics of a table chart. The boxes of the table consist of different types of information such as the population of a town, marks of a student, expenses of a company, production data of any industry etc. Table Chart questions are extremely important and have a good weightage as well. Many students sometimes find it difficult to solve these types of questions. Therefore, its recommended for students to practice these questions rigorously.
Sample:
Average marks of students of class 10 of different schools of a city are represented subject wise as shown in table:
Maths | Science | English | Social Science | Hindi | |
St. Marry | 81 | 81 | 81 | 81 | 81 |
Elite | 78 | 78 | 78 | 78 | 78 |
Romex | 64 | 64 | 64 | 64 | 64 |
DPS | 91 | 91 | 91 | 91 | 91 |
Questions On the Line Graph From CAT Previous Year Papers
Answer the questions on the basis of the information given below. A study was conducted to ascertain the relative importance that employees in five different countries being assigned to five different traits in their Chief Executive Officers. The traits were compassion (C), decisiveness (D), negotiation skills (N), public visibility (P), and vision (V). The level of dissimilarity between two countries is the maximum difference in the ranks allotted by the two countries to any of the five traits. The following table indicates the rank order of the five traits for each country. [ CAT Question Paper 2015]
Q1. Which of the following pairs of countries are most dissimilar?
China and Japan
India and China
Malaysia and Japan
Thailand and Japan
Ans: (4)
Difference in ranks skills-wise is shown as below:
C | N | D | V | P | |
China and Japan | 3-2 =1 | 2-1 =1 | 4-1 =3 | 5-4 =1 | 5-3= 2 |
India and China | 2-1= 1 | 3-1 =2 | 5-4 = 1 | 5-4 = 1 | 3-2 =1 |
Malaysia and Japan | 4-3 =1 | 5-2 =3 | 2-1= 1 | 4-1 = 3 | 5- 3 =2 |
Thailand and Japan | 3-2 =1 | 3-2 =1 | 5-1 =4 | 4-1 =3 | 5-4=1 |
Thailand and Japan should be the answer since these countries show the maximum difference in ranks (i.e., 4) on the basis of decisiveness.
No other countries show a difference of 4.
Q2. Which of the following countries is least dissimilar to India?
China
Japan
Malaysia
Thailand
Ans: (1)
Difference between the ranks on the basis of given traits of other countries with India is calculated.
Traits | China | Japan | Malaysia | Thailand |
C | 2-1=1 | 5-1=4 | 4-1=3 | 2-1=1 |
P | 3-2=1 | 4-2=2 | ||
N | 3-1=2 | 3-3=0 | ||
V | 5-4=1 | 4-2=2 | ||
D | 5-4=1 | 5-5=0 |
India and China show a maximum difference of 2 for 1 time.
India and Japan show a difference of greater than 2 (Compassion), so it cannot be least dissimilar and we need not to calculate differences for other traits.
Similar is the case with Malaysia.
With Thailand, the difference of 2 appeared twice. Therefore it can not be least dissimilar. The answer is China.
Q3. Which amongst the following countries is most dissimilar to India?
China
Japan
Malaysia
Thailand
Solution: (2)
since China is the least dissimilar, as discussed in the previous question. So, China cannot be the answer, and we will not find the differences for China in this case.
Traits | Japan | Malaysia | Thailand |
C | 5-1=4 | 4-1=3 | 2-1=1 |
P | 5-2 =3 | 3-2=1 | 4-2=2 |
N | 3-2=1 | 5-3=2 | 3-3=0 |
V | 4-4=0 | 4-1=3 | 4-2=2 |
D | 3-1=2 | 5-2=3 | 5-5=0 |
Clearly, Japan shows the maximum difference in ranks, So Japan is most dissimilar in ranks with India
Prerequisite:
To prepare Data Interpretation (Line Graph) for the CAT exam, a student must learn
Percentage (Basic)
Averages
Calculations based on ratios
Approximation
Use Approximation.
Observe the data carefully.
Solve small calculations mentally.
References to Study (Theory):
LRDI for CAT and GMAT by Nishit K Sinha.
To learn the basics of bar graph read statistics of class 9 and Class 10 Mathematics from NCERT (For Theory)
Kailasha Online Learning Classroom YouTube Channel
References to Study (Practice):
1. Sample Papers
2. Question bank from CAT-Holic
3. How to Prepare for Data Interpretation for CAT by Arun Sharma
4. CAT previous year papers
Conjunctions are used to connect more than two words or phrases. It defines the connection between the joined sentences.
Examples:
He likes to eat both Noodles and Pizza.
The tulips and orchids are flowers.
Until next month, I can’t afford to travel.
Conjunctions are useful as well as convenient. Conjunctions are extremely common.
There are three types of English conjunctions:
Coordinating: for, not, yet, so etc
Subordinating: Although, though, while, if, until etc.
Correlative: Neither/ Nor, Whether/ Or, Either/ Or etc.
Interjections are used to express emotions in a sentence. Also, interjections are grammatically independent of the words around them.
Examples:
Greeting: Hey! After such a long time, I am seeing you.
Joy: Oh my gosh! What is happening there?
Surprise: Ah! Finally you clear your CAT Exam!
Approval: Yes! you are hired!
Attention: Listen, you are fired.
Sorrow: Oh dear, I really wanted to marry you.
Questions On Conjunction and Interjection from CAT Previous Year Papers/ CAT practice questions on conjunctions
Direction: Choose the part which requires correction. [Based on Previous Years Questions]
Q.1 As soon as (1) / he got the (2) / courier, at once (3) / he started. (4) / No Error (5)
(1)
(2)
(3)
(4)
Ans: C
The conjunction 'as soon as is used to show two simultaneous actions. So, in the third part, the use of ‘at once’ is incorrect
Q2. I will either (1) / go for an interview (2) / else play (3) / Cricket. (4) / No Error (5)
1
2
3
4
5
Ans: C
With “Either’, ‘Or’ comes.
So, (3) contains error. ‘else’ should be replace by ‘or’.
Q3. Be kind (1)/ not only in words (2) / and also (3) / in behavior. (4) / No Error (5)
1
2
3
4
5
Ans: C
The correct conjunction to be used is ‘but’ in place of ‘and’.
Prerequisite:
Knowledge of sentence formation
Basic Knowledge of Sentence Formation
Use of Nouns, Pronouns and Verbs.
Use of the comma when a coordinating conjunction is joining two independent clauses.
When a conjunction joins two words in a sentence, then the sentence cannot be separated in two independent sentences.
Learn all the conjunctions and their uses separately with the help of examples.
References to Study (Theory):
Advanced English grammar by Wren and Martin
2iim YouTube Channel
References to Study (Practice):
Question Bank from iquanta.com
CAT previous year papers
How to Prepare for Verbal Ability & Reading Comprehension for CAT by Meenakshi Upadhyay and Arun Sharma (9th Edition)
We will be back with Day-6 strategy. Do practice and be focused.
Thank You
All the best.
CAT 2023 Official Question Paper and Answer Key (Slot 1) | |
CAT 2023 Official Question Paper and Answer Key (Slot 3) |
CAT 2025 is likely to be held in November 2025, tentatively on the last Sunday of the month.
CAT is organized by one of the IIMs on a rotational basis every year. The organizing IIM for CAT 2025 will be mentioned in the official notification released likely in July 2025. Though the pattern and structure of the exam remain unchanged, the question pattern and difficulty level could be slightly different based on the organizing IIM.
CAT is a very competitive exam, and the level of difficulty changes every year. Quantitative Aptitude and LRDI are usually moderate to tough, but VARC may be tricky as it involves reading comprehension complexity. But as CAT is a percentile-based test, your ranking depends on how you perform in relation to other candidates.
Begin with the knowledge of exam pattern, going through previous year papers, and making a systematic study plan. Prioritize conceptual clarity and then proceed to mock tests and sectional practice. A constant analysis of mock tests will enable you to realize your weaknesses and enhance your speed and accuracy.
Past year papers are needed to grasp the pattern of the exam and the types of frequently asked questions, but they alone are not sufficient. Practice mock tests, sectional tests, and topic-wise questions to enhance speed, accuracy, and problem-solving abilities as well. As CAT questions don't repeat word by word, candidates need to focus on concepts instead of memorization.
With a 60 percentile in CAT, your son may have limited options for top-tier MBA programs, but there are still several good colleges offering residential MBA programs. Some institutes that may accept this percentile range include UPES Dehradun, IBS Hyderabad, Woxsen University, ITM Business School, and Vignana Jyothi Institute of Management. These colleges may offer opportunities with a focus on industry-oriented learning. It’s also worth exploring state universities and institutions that accept other entrance exams like MAT or XAT.
With a rank of 33,000 in the VITEEE 2025 exam:
You can get:
VIT-AP (Amaravati) – Category 1 or 2 for most branches including CSE (except CSE specializations might need Cat 2).
VIT-Bhopal – Easily Category 1 for all branches including CSE and its specializations.
Both campuses have relatively lower cutoffs than VIT Vellore or Chennai, so 33,000 rank is considered good for AP or Bhopal campus.
VIT Bhopal – CSE (Cat 1): Lower fees, good for programming, but newer campus and fewer top-tier companies.
VIT Chennai – ECE (Cat 2): Better campus, more industry exposure, but higher fees and slightly lower average packages for ECE.
Verdict: If you prefer CSE and lower fees, go for VIT Bhopal. If you value campus reputation and industry exposure, choose VIT Chennai ECE.
Hey there! With a rank of 74k in VITEEE, getting into CSE at VIT AP might be a bit tricky, especially in Category 1, where the competition is pretty fierce. However, you might have a better shot in Category 2, as they usually have more seats and slightly relaxed criteria. It's always worth checking the latest cutoffs and trends, but don't lose hope just yet! Good luck! For more detail call-9962747850
With a rank of 74,000 in VITEEE, it is unlikely that you will secure admission in Computer Science Engineering (CSE) in either Category 1 or Category 2 at VIT AP, as the cutoffs for CSE are generally higher. However, you may explore other branches or options.
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