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Based on the CAT 2024 syllabus, we previously covered strategies for Algebra (Quadratic Equations), Cube (Logical Reasoning), and Sentence Corrections with CAT algebra questions on Day 14 of our preparation series.
Now, for Day 15, we’ll focus on strategies for tackling polynomial questions in the CAT exam.
To excel in CAT 2024, follow our 60-day preparation schedule to ensure you stay organized and on track with your study plan.
Polynomials are mathematical expressions that consist of variables or determinants, coefficients, exponents, and constant terms combined with mathematical expressions like addition, subtraction, or multiplication.
It is generally denoted by f(x).
The general form of a polynomial equation is:
an xn + an-1 xn-1 + an-2 xn-2 + ........ + a1 x + a0
Example:
4x2 + 2x + 3 is a polynomial where x is the variable.
An example of a polynomial equation with two variables is:
3x2 + 2xy + y2 + 4x + 5y + 7, where x and y are two variables.
The degree of a polynomial is the highest exponent of a variable in the polynomial expression with a non-zero coefficient.
Example:
7x4 + 3x3 + 9x + 1; Degree of the polynomial = 4
x3 + 3x2y4 + 3y4 + 5; Degree of the polynomial = 6
It is also to be remembered:
A polynomial with degree 0 is called a Constant or zero polynomial.
In other words, the degree of zero polynomial is zero.
Example: f(x) = 2
A Polynomial with degree 1 is a Linear polynomial.
Example: f(x) = 2x + 1
A polynomial with degree 2 is a Quadratic polynomial.
Example: f(x) = 2x2 + x + 1
A polynomial with degree 3 is a Cubic polynomial.
Example: f(x) = 2x3 + 3x2 + x + 1
A polynomial with degree 4 is a Biquadratic polynomial.
Example: f(x) = 2x4 + 2y + 4z + 1
A zero of a Polynomials is a value of the variable (often denoted as "x") that makes the entire polynomial equal to zero. In other words, if you substitute that value for "x" in the polynomial expression, the result will be zero. Another term for the zero of a polynomial is "root" or "solution."
In general, the number of zeroes of a polynomial is equal to its degree, and some of the zeroes may be repeated. For example, a polynomial of degree 3 will have three zeroes (counting multiplicities), and so on. Understanding the zeroes of a Polynomials is crucial in solving various mathematical problems.
There are a few ways to find the zeros of a polynomial.
The factorization method is the most commonly used.
Quadratic formula
Synthetic division
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We also have to study “polynomial regression”, “Types of Polynomials ”, and “polynomial function” to learn more about this chapter.
Here are some CAT previous year algebra questions shuffled up from different PYQs of the CAT exam before:
Q1. If a, b, c, and d are integers such that a + b + c + d = 30, then the minimum possible value of (a – b)2 + (a – c)2 + (a – d)2 is:
(TITA, CAT exam 2017)
5
6
2
8
Solution:
Given that a + b + c + d = 30.
For the minimum possible value of (a – b)2 + (a – c )2+ (a – d)2,
(a – b) = (a – c) = (a – d) = 0
But this is not possible because 30 is not a multiple of 4.
We should find a as close to b, c, and d as possible.
We should take values of a, b, c and d close to 30/4 = 7.5
So, a, b, c, and d should take the values of 7 or 8.
For the minimum possible value of (a – b)2 + (a – c)2 + (a – d)2, the difference of a taken with b, c or d should not be greater than 1.
So, Possible sets of a, b, c and d will be
a | b | c | d | (a – b)2 + (a – c)2 + (a – d)2 |
7 | 7 | 8 | 8 | 2 |
8 | 8 | 7 | 7 | 2 |
7 | 8 | 7 | 8 | 2 |
7 | 8 | 8 | 7 | 2 |
8 | 7 | 8 | 7 | 2 |
8 | 7 | 7 | 8 | 2 |
So, the minimum possible value of (a – b)2 + (a – c)2 + (a – d)2 is 2.
Hence, the correct answer is 2.
Q2. For real x, the maximum possible value of x/√(1+x4) is:
[CAT exam 2020]
A. 1
B. ½
C. 1/√2
D. 1/√3
Solution:
Dividing both numerator and denominator by x, we get,
1/√[(1/x2) + x2]
The value of (1/x2) + x2 should be the minimum to get the original fraction maximum.
For real values of x, (1/x2) + x2 has a minimum value equal to 2.
So, the maximum value of x/√(1+x4) is 1/√2.
Hence, the correct answer is 1/√2.
The standard form of a Linear polynomial is ax + b.
The standard form of a Quadratic polynomial is ax2 + bx + c.
The standard form of a Cubic polynomial is ax3 + bx2 + cx + d.
The standard form of a biquadratic polynomial is ax4 + bx3 + cx2 + dx + e.
The degree of a constant polynomial is 0.
For the quadratic equation ax2 + bx + c = 0 if the roots are α and β, then
Sum of the roots, α + β = –b/a
Product of the roots, α β = c/a
For the cubic equation ax3 + bx2 + cx + d = 0, if the roots are α, β, and γ, then
Sum of the roots, α + β + γ = –b/a
Product of the roots, α β γ = –d/a
Sum of the product of roots taken two at a time, α β + β γ + α γ = c/a
You have to solve different kinds of problems based on polynomials. Practice more and more problems on polynomials for CAT.
Also, learn
(x + y)2 = x2 + y2 + 2xy
(x – y)2 = x2 + y2 – 2xy
(x + y)3 = x3 + y3 + 3xy2 + 3x2y
(x – y)3 = x3 – y3 – 3x2y + 3xy2
(x – y – z)3 = x3 – y3 – z3 – 3x2y + 3xy2 – 3y2z – 3yz2 + 3xz2 – 3x2z + 6xyz
References to Study (Theory)
NCERT Class 9-10
How to Prepare Quantitative Aptitude by Arun Sharma (7th edition)
2IIM CAT Preparation (You-Tube)
References to Study (Practice) CAT Algebra Questions
Pearson (How to prepare quantitative aptitude for CAT)
https://iim-cat-questions-answers.2iim.com
Previous Year's Question Papers to practice polynomial questions for the CAT exam
The different kinds of questions asked in the CAT Exam on Cubes are:
Question. A cube painted on all faces is cut into 1331 cubes of the same size.
1. How many cubes are not painted on any face?
1000
729
81
270
Answer: (B)
Trick: Only the inner cubes
i.e., (k - 2)3, where k = dimension of larger cube/dimension of smaller cube
Here, k = 11
So, the number of cubes not painted on any face is (11 - 2)3 = 93 = 729
2. How many cubes are painted on three faces?
8
16
36
54
Answer: (A)
Trick: Corner cubes only.
A cube has 8 corners.
Hence, the correct answer is always 8.
Question. A cube of 4 cm is painted yellow on the pair of one opposite surface, red on the pair of another opposite surface and blue on the remaining pair of opposite surfaces. The cube is now divided into smaller cubes of equal size of 1 cm each.
3. Find the number of smaller cubes with three surfaces painted.
6
8
16
27
Answer: (B)
Trick: Corner cubes only.
A cube has 8 corners.
Hence, the correct answer is always 8.
4. Find the number of smaller cubes with two surfaces painted.
24
8
16
30
Answer: (A)
Trick: Surface cubes except for the corner cubes.
k = dimension of larger cube/ dimension of smaller cube
Cubes with two face painted = 6 × (k – 2)2 = 6 × 22 = 24
5. Find the number of cubes with two surfaces painted with yellow and red colour.
10
8
9
16
Answer: (B)
Trick: Cubes at the common edges of yellow and red surfaces, except corner cubes.
Common edges of yellow and red will be 4 and 2 cubes (except at corners) at each edge.
So, the number of cubes with two surfaces painted with yellow and red colour is 4 × 2 = 8
Question. Here is the information given below. Based on this information, answer the questions.
A cube has six sides, each of which has a different colour: black, blue, yellow, red, pink, and white.
The red side is opposite the black.
The yellow side is between the red and the black.
The blue side is adjacent to the white.
The black side is adjacent to the white.
The red side is the bottom face.
1. What are the four colours that are adjacent to the yellow?
Black, blue, pink, red
Black, blue, red, white
Black, blue, pink, white
Black, red, pink, white
Answer: A
Trick: Except for the colour opposite to the yellow face.
So, except for white, others are adjacent to yellow.
2. Which of the information can be deduced from the information given in statements I, II, and VI?
White is on the top.
Blue is on the top.
Black is on the top.
White is opposite to black.
Answer: C
Trick: Draw an open cube diagram.
Black must be at the top according to statements I, II, and VI.
References for Study (Theory):
Verbal and Non-Verbal Reasoning by R S Aggarwal. (Basic)
Cat preparation-iQuanta (YouTube Channel)
References to Study (Practice):
Verbal and Non-Verbal Reasoning by R S Aggarwal. (Basic)
LRDI for CAT and GMAT by Nishit K Sinha. (Advance)
Previous Year's Question Papers
A sentence is a group of words connected to make meaning. A sentence must use appropriate verbs, helping verbs, punctuation etc.
The Subject and Verb must agree in number and Person (Noun/ Pronoun, Singular/ Plural). Mastering subject-verb agreement rules is crucial for effective communication and writing in the English language.
Person Rule:
Person | Singular | Verb | Plural | Verb |
First Person | I | Am/was/shall | We | Are/ were/ shall |
Second Person | You | Are/ were/ will | You | Are/ were/ will |
Third Person | He/She/it | It/was/will | They | Are/ were/ will |
Number Rule: The number rule is not as simple as the person's rule. There are a few exceptions too.
There are many rules such as:
Subject and Verb should be either singular or plural.
Countable nouns can take a plural, can combine with counting quantifiers (e.g., one, hundred, every, many), and can take an indefinite article such as a or an. Examples of counting nouns are table, glass, and occasion.
Uncountable nouns: they cannot take plurals or combine with number words.
Proximity Rule: Where two or more subjects are connected by: or, either…or, neither…nor. The subject that is closest to the verb decides the number of the verb.
Students can also practice on “subject-verb agreement worksheets with answers pdf”, “40 rules of subject-verb agreement pdf”, and “subject-verb agreement exercises with answers doc” to learn more about this chapter.
The following subject-verb agreement exercises are VARC questions for CAT, based on topic subject-verb agreement based on the previous year's question papers of the CAT exam.
Correct the sentences:
Q1. The Seven Strangers, Manav included, was supposed to meet for dinner later that night after a conference.
was supposed to meet
was supposed to have met
were suppose to be meeting
were supposed to meet
they were supposed to be meeting
Answer: (D)
Here the subject is “The seven strangers”, which is plural.
So, the plural verb “were” will be used here.
The correct sentence will be:
“The Seven Strangers, Manav included, were supposed to meet for dinner later that night after a conference.”
Q2. Without proper guidance and better support, there is no chances that our candidate will win the election.
there is no chances that
there can be no chance for
there is no chance that
there are no chances for
there will be no chances for
Answer: (C)
Here the singular verb ‘is’ does not agree with the plural subject ‘chances’.
So, replace chances with a chance.
The correct sentence will be:
“Without proper guidance and better support, there is no chance that our candidate will win the election.”
Q3. After he attended the seminar, many more resources were at Philip’s disposal, including new contacts, excellent books and pamphlets to help him improve his resume.
many more resources were at Philip’s disposal
at Philip’s disposal were many more resources
there were many more resources at Philip’s disposal
Philip, at his disposal, had many more resources
Philip had many more resources at his disposal
Answer: (E)
On Comparison, we found that ‘E’ is most suitable.
The correct sentence will be:
“After he attended the seminar, Philip had many more resources at his disposal, including new contacts, excellent books, and pamphlets to help him improve his resume.”
To identify the subject, one must spot the verb and ask a question that the verb along with the predicate is supposed to answer.
A collective noun is considered as a whole and takes a singular verb.
When the plural noun denotes some specific quantity considered as a unit, the verb used is generally singular.
Words such as glasses, pliers, and scissors are regarded as plural and require plural verbs unless they’re preceded by the phrase ‘pair of ‘and this word becomes the subject.
Write rules and revise them regularly.
Attempt Mock-Test papers.
Complete Knowledge of Nouns
Complete Knowledge of Pronouns
Knowledge of Articles
Knowledge of Verbs
Basic knowledge of Tenses.
References to Study (Theory):
Advanced English grammar by Wren and Martin
CAT Edurav (Youtube Channel)
References to Study (Practice):
How to Prepare for Verbal Ability & Reading Comprehension for CAT by Meenakshi Upadhyay and Arun Sharma (9th Edition)
https://www.800score.com/gmat-prep/prep-guide/sample-questions/
Practice Sample Question Papers.
CAT 2024 Quantitative Aptitude Study Material PDF - Geometry and Mensuration | CAT 2024 preparation tips with 30-day study material by Experts |
Hello,
Here are important points regarding your query :-
Hope it helps !
Hi,
Based on the previous year analysis, According to your CAT 2024 percentile some of the colleges in which you have chances to get a seat includes:
You can predict more colleges using the CLAT 2024 college predictor tool .
Hope this information will help you
Hello Greetings
With a CAT 2024 percentile of 68.28%, you may face a challenging time getting into IIT Delhi, as their cutoffs are typically higher. However, being an SC female student, you may be eligible for relaxation in the cutoff criteria .
To give you a better idea, here are some general CAT cutoff percentiles for IITs and other top B-schools:
- *IIT Delhi*: Typically above 90 percentile for general category students.
- *Newer IIMs*: Such as IIM Vishakapatnam, IIM Shillong, and IIM Udaipur, may have lower cutoffs, around 80-90 percentile.
- *Other top B-schools*: Like IMT Ghaziabad, XIM Bhubaneswar, and TAPMI, may also consider students with lower percentiles.
It's essential to note that CAT cutoffs can vary from year to year, and other factors like your academic background, work experience, and performance in the personal interview (PI) and written ability test (WAT) also play a significant role in the admission process.
To explore more options and predict your chances of getting into various colleges, you can use online CAT college predictor tools .
Have a great day
Hello Greetings
Considering your 82.58 percentile in CAT and 22 months of industry experience in IT and Financial analysis, you have several options for General Management PGDM or PGPM programs.
*Decent Colleges Accepting Low CAT Percentile:*
- _SPJIMR_: Offers PGDM and PGPM programs, accepting CAT scores, with a minimum eligibility criterion of 50% aggregate in graduation ¹ ².
- _SOIL_: Provides PGPM and PGDM programs, considering CAT scores, with a focus on experiential learning ³.
- Other institutes like _IMT Ghaziabad_, _XIMB_, and _IRMA_ might also accept candidates with lower CAT percentiles, but this may vary depending on the program and intake.
*Key Factors to Consider:*
- _Work Experience_: With 22 months of experience, you might be eligible for PGPM programs, which typically require more work experience than PGDM programs ¹.
- _Career Gap_: Explain your career gap effectively in your application, highlighting any relevant activities or skills gained during that period.
- _Profile-Based Selection_: Some institutes consider profiles, including work experience, academic background, and extracurricular activities, in addition to CAT scores ¹.
*Next Steps:*
1. Research the institutes mentioned above and their programs.
2. Review the eligibility criteria, admission process, and fees for each program.
3. Prepare your application, ensuring you effectively communicate your strengths, work experience, and career goals.
4. Be prepared for interviews, focusing on your profile, experience, and motivation for pursuing a PGDM or PGPM program.
Remember, a lower CAT percentile doesn't necessarily limit your options. Focus on showcasing your strengths, experience, and fit with the program to increase your chances of admission.
Have a great day
Hi Gaurav,
The Common Admission Test (CAT) is a national-level management entrance exam conducted annually in India for admission into MBA/PGDM programs at prestigious institutions like the Indian Institutes of Management (IIMs) and other top B-schools.
For registering for CAT 2025, you can follow the given steps:
For more recent details, you can check out the given link.
Best wishes!
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