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    • Real numbers chapter – 1Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions of NCERT math 10th class real numbers.
      • Real numbers exercise 1.1Real number exercise step wise solution of all questions of NCERT math 10th class
      • Real numbers exercise 1.2Real number exercise step wise solution of all questions of NCERT math 10th class
    • Polynomials chapter–2 class 9Step wise solution of every question along with detailed description of each point in relation to NCERT math 9th class Polynomial chapter by The Catalyst Sobha.
      • Polynomials chapter – 2Get step wise solution of all questions of NCERT math 10th class polynomial
      • Polynomials exercise 2.1Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions and crystal clear understanding with examples about the polynomials of NCERT math 10th class.
      • Polynomials exercise 2.2Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions and crystal clear understanding with examples about the polynomials of NCERT math 10th class.
    • Pair of Linear Equations in Two Variables chapter -3Get step wise solution of all questions of NCERT math 10th class Pair of Linear Equations in Two Variables
      • Theory related to Pair of Linear Equations in Two VariablesClass 10th math NCERT solution by the catalyst sobha. Get step wise and crystal clear understanding with examples about Pair of Linear Equations of NCERT math 10th class.
      • Pair of Linear Equations in Two Variables exercise 3.1Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions and crystal clear understanding with examples about the Pair of Linear Equations in Two Variables of NCERT math 10th class.
      • Pair of Linear Equations in Two Variables Exercise 3.2Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions and crystal clear understanding along with proper explanation related to the Pair of Linear Equations in Two Variables of NCERT math 10th class.
      • Pair of Linear Equations in Two Variables Exercise 3.3Class 10th math NCERT solution by the catalyst sobha. Get step wise solution of all questions and crystal clear understanding along with proper explanation related to the Pair of Linear Equations in Two Variables of NCERT math 10th class.
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Polynomials all formula
February 3, 2026
Class 10 Real Numbers all formula
February 3, 2026
NCERT class 9 Triangles
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NCERT, Class 9, Lines and Angles , Chapter–6, Exercise-6.2, Important questions with explained answers
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NCERT, Class 9, Lines and Angles , Chapter–6, Exercise-6.1– Important questions
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NCERT, Class 9, Introduction to Euclid’s Geometry , Chapter–5, Exercise-5.1– Step wise to the point solution of each question
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NCERT, Class 9, Linear Equations in Two variables, Chapter–4, Exercise-4.2– Step wise to the point solution of each question
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CBSE class 10 sample paper
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NCERT, Class 9, Linear Equations in Two variables, Chapter–4, Exercise-4.1– Step wise accurate solution of each question
August 31, 2025
NCERT, Class 9, Coordinate Geometry, Chapter–3, Exercise-3.2– Exact solution of each question.
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NCERT, Class 9, Coordinate Geometry, Chapter–3, Exercise-3.1– Step wise perfect solution of each question
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NCERT, Class 9, Polynomials, Chapter–2, Exercise-2.4– Step wise accurate solution of each question
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NCERT, Class 9, Polynomials, Chapter–2, Exercise-2.3– Step wise solution of every question
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NCERT, Class 9, Polynomials, Chapter–2, Exercise-2.2– Exact solution of every question
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NCERT, Class 9, Polynomials, Chapter–2, Exercise-2.1– Perfect approach to every question
May 27, 2025
NCERT, Class 10, Probability, Chapter–14, Exercise-14.1– Unique approach to every question
May 13, 2025
NCERT, Class 10, Statistics, Chapter–13, Exercise-13.3– Perfect approach to every question
April 5, 2025
NCERT, Class 10, Statistics, Chapter–13, Exercise-13.2– Proper explanation of each question
March 23, 2025
NCERT, Class 10, Statistics, Chapter–13, Exercise-13.1– Elaborated explanation of every question
March 13, 2025
NCERT, Class 10, Surface Areas and Volumes, Chapter–12, Exercise-12.2– Exact explanation of every question
February 27, 2025
NCERT, Class 10, Surface Areas and Volumes, Chapter–12, Exercise-12.1 – proper explanation of every question
February 12, 2025
NCERT, Class 10, Areas Related to Circles, Chapter–11, Exercise-11.1 – proper explanation of every question
January 24, 2025
NCERT, Class 10, Circles, Chapter–10, Exercise-10.2 – Perfect explanation of every question with proper figure of every aspect
January 5, 2025
NCERT, Class 10, Circles, Chapter–10, Exercise-10.1 – Perfect explanation of every question
December 27, 2024
NCERT, Class 10, Some Applications of Trigonometry, Chapter–9, Exercise-9.1 – Exact approach to each question with proper figure and explanation
December 22, 2024
NCERT, Class 10, Introduction to Trigonometry, Chapter–8, Exercise-8.3 – proper explanation of every question
December 15, 2024
NCERT, Class 10, Introduction to Trigonometry, Chapter–8, Exercise-8.2 – step wise explanation of every question
December 10, 2024
NCERT, Class 10, Introduction to Trigonometry, Chapter–8, Exercise-8.1 – Perfect explanation of every question
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NCERT, Class 10, Coordinate Geometry, Chapter–7, Exercise-7.2 – Exact explanation of each question
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NCERT, Class 10, Coordinate Geometry, Chapter–7, Exercise-7.1 – Proper explanation of each question
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NCERT, Class 10, Triangles, Chapter–6, Exercise-6.3 – To the point approach to each question with proper figure and explanation
November 24, 2024
NCERT, Class 10, Triangles, Chapter–6, Exercise-6.2 – Exact approach to each question with proper figure and explanation
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NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.4 – Exact explanation of each question
October 30, 2024
Some facts about the similarity we must know
October 29, 2024
NCERT, Class 10, Triangles, Chapter–6, Exercise-6.1 – Exact explanation of each question with proper figure
October 26, 2024
Some facts about angles, triangles, congruency and similarity- we must know
October 24, 2024
NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.3 – Proper explanation along with step wise solution of each question
October 19, 2024
NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.2 – Step wise properly explained solution of each question
October 14, 2024
NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.1 – Step wise solution of every question with proper explanation
October 6, 2024
Some facts about arithmetic progression (A.P.)
October 5, 2024
NCERT, Class 10, Quadratic Equations, Chapter–4, Exercise-4.3 – Step wise solution of every question with proper explanation
October 3, 2024
NCERT, Class 10, Quadratic Equations, Chapter–4, Exercise-4.2 – Step wise solution of each question with complete explanation
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NCERT, Class 10, Quadratic Equations, Chapter–4, Exercise-4.1 – Step wise solution of each question with complete explanation
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Methods for solving a Quadratic Equation – Detailed step wise explanation of every method
September 21, 2024
Some facts about the Quadratic Equation we should know:
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NCERT, Class 10, Pair of Linear Equations in Two Variables, Chapter–3, Exercise-3.3 – Step wise solution of each question with complete explanation
September 18, 2024
Algebraic Identities
September 18, 2024
NCERT, Class 10, Pair of Linear Equations in Two Variables, Chapter–3, Exercise-3.2 – Stepwise solution with proper explanation of each question
September 12, 2024
NCERT, Class 10, Pair of Linear Equations in Two Variables, Chapter–3, Exercise-3.1 – Stepwise solution with proper graph of each question
September 9, 2024
NCERT, Class 9, Number Systems, Chapter–1, Exercise-1.5 – Stepwise solution of each question
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NCERT, Class-10th, Chapter-2, Polynomials, Exercise-2.1- Proper solution of each question on graph paper
September 6, 2024
NCERT, Class 9, Number Systems, Chapter–1, Exercise-1.4 – Stepwise clear solution of each question
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NCERT, Class 10, Polynomials, Chapter–2, Exercise-2.2 – Stepwise proper explanation of each question
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Polynomials: definition and its classification
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NCERT class 9th- Number System -Exercise 1.3- Proper explanation of each question
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Important facts, depth in concept about and terms related to an expression and equation
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NCERT, 10th class, chapter 1, Real Number, Exercise 1.2- full explanation of every question
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NCERT class 10th – Real Numbers -Exercise 1.1- Proper explanation of each question
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Some facts about Decimal Numbers
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NCERT, Class 9, Number Systems, Chapter–1, Exercise-1.2 – Stepwise solution of each question
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Some facts about linear equations in two variables we should know
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NCERT, Class 9, Number Systems, Chapter–1, Exercise-1.1 – Stepwise proper solution of each question
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Some facts about number system we should know: proper explanation with examples
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Posted inClass 10th math NCERT

Polynomials all formula

Polynomials definition, formula and types Class -10 chapter – 2, Polynomials(A) What is a quantity?A quantity is a thing which can be measured. There are two types of quantities:- (1)…
Posted inClass 10th math NCERT

Class 10 Real Numbers all formula

Class 10 Real Numbers all definitions Class -10, chapter – 1, Real Numbers(A) Prime numbers:-Member of a set of numbers which are divisible only by 1 and itself. In simple…
Posted inClass 9th math NCERT

NCERT class 9 Triangles

NCERT, Class 9, Triangles , Chapter–7, Exercise-7.1, Important questions with explained answers Q. 1. In quadrilateral ABCD, AC=AD and AB bisects angle A as shown in the figure. Show that…
Posted inClass 9th math NCERT

NCERT, Class 9, Lines and Angles , Chapter–6, Exercise-6.2, Important questions with explained answers

Q. 1. In the figure, if AB∥ CD,CD∥EF and y : z = 3 : 7. Find x. Q 2. In the figure, if AB∥CD,EF⊥CD and angle GED=126 degree. Find…
Posted inClass 9th math NCERT

NCERT, Class 9, Lines and Angles , Chapter–6, Exercise-6.1– Important questions

Q. 1. In the figure, lines AB and CD intersect at O. If angle AOC + angle BOE = 70 degree and angle BOD = 40 degree, find angle BOE…
Posted inClass 9th math NCERT

NCERT, Class 9, Introduction to Euclid’s Geometry , Chapter–5, Exercise-5.1– Step wise to the point solution of each question

Q. 1. Which of the following statements are true and which are false? Give reasons for your answers (i) Only one line can pass through a single point.(ii) There are…
Posted inClass 10th math NCERT Triangles Chapter–6 Triangles Exercise 6.3

NCERT, Class 10, Triangles, Chapter–6, Exercise-6.3 – To the point approach to each question with proper figure and explanation

Q. 1. State which pairs of triangles in the figures are similar. Write the similarity criterion used by you for answering the question and also write the pair of similar…
Posted by The Catalyst Sobha November 24, 2024
Posted inClass 10th math NCERT Triangles Chapter–6 Triangles Exercise 6.2

NCERT, Class 10, Triangles, Chapter–6, Exercise-6.2 – Exact approach to each question with proper figure and explanation

Q.1. In the figure (i) and (ii), DE is parallel to BC. Find: (a) EC in figure-i (b) AD in figure –ii; Q. 2. E and F are points on…
Posted by The Catalyst Sobha November 3, 2024
Posted inArithmetic Progressions Chapter–5 Arithmetic Progressions Exercise 5.4 Class 10th math NCERT

NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.4 – Exact explanation of each question

Q. 1. Which term of the AP: 121, 117, 113,…., is its first negative term? [Hint: Find n for an < 0]; Q. 2. The sum of the third and…
Posted by The Catalyst Sobha October 30, 2024
Posted inClass 10th math NCERT Theory related to the Triangles Triangles Chapter–6

Some facts about the similarity we must know

(1) What is similarity?; (2)  Different criteria of similarity of two Triangles; (3) A-A-A (Angle-Angle-Angle) criterion of similarity of two triangles; (4) S-S-S (Side- Side - Side) criterion of similarity…
Posted by The Catalyst Sobha October 29, 2024
Posted inClass 10th math NCERT Triangles Chapter–6 Triangles Exercise 6.1

NCERT, Class 10, Triangles, Chapter–6, Exercise-6.1 – Exact explanation of each question with proper figure

Q. 1. Fill in the blanks using the correct word given in the bracket: (i) All circles are ---------------. (congruent, similar), (ii) All squares are------------.  (similar, congruent), (iii) All---------- triangles…
Posted by The Catalyst Sobha October 26, 2024
Posted inClass 10th math NCERT Theory related to the Triangles Triangles Chapter–6

Some facts about angles, triangles, congruency and similarity- we must know

(1) Definition of triangle; (2) How to write an angle; (3) Types of angles; (4) What is an Acute Angle?; (5) What is an Obtuse Angle?; (6) What is a…
Posted by The Catalyst Sobha October 24, 2024
Posted inArithmetic Progressions Chapter–5 Arithmetic Progressions Exercise 5.3 Class 10th math NCERT

NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.3 – Proper explanation along with step wise solution of each question

Q.1.: Find the sum of the following APs: (i) 2, 7, 12,…….. to 10 terms, (ii) –37, –33, –29,..….to 12 terms, (iii) 0.6, 1.7, 2.8,…….. to 100 terms, (iv) 1/15…
Posted by The Catalyst Sobha October 19, 2024
Posted inArithmetic Progressions Chapter–5 Arithmetic Progressions Exercise 5.2 Class 10th math NCERT

NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.2 – Step wise properly explained solution of each question

Q. 1. Fill in the blanks in the following table, given that a is the first term, d the common difference and an the nth term of the AP:; Q.…
Posted by The Catalyst Sobha October 14, 2024
Posted inArithmetic Progressions Chapter–5 Arithmetic Progressions Exercise 5.1 Class 10th math NCERT

NCERT, Class 10, Arithmetic Progressions, Chapter–5, Exercise-5.1 – Step wise solution of every question with proper explanation

Q. 1. In which of the following situations, does the list of numbers involved make an arithmetic progression, and why? (i) The taxi fare after each km when the fare…
Posted by The Catalyst Sobha October 6, 2024
Posted inArithmetic Progressions Chapter–5 Class 10th math NCERT Theory related to the arithmetic Progressions

Some facts about arithmetic progression (A.P.)

(1) What is a pattern or progression?; (2) Types of progression; (3) What are consecutive terms?; (4) what are successive terms?; (5) What is an A.P. or Arithmetic Progression?; (6)…
Posted by The Catalyst Sobha October 5, 2024

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  • Areas Related to Circles chapter–11
  • Areas Related to Circles Exercise 11.1
  • Arithmetic Progressions Chapter–5
  • Arithmetic Progressions Exercise 5.1
  • Arithmetic Progressions Exercise 5.2
  • Arithmetic Progressions Exercise 5.3
  • Arithmetic Progressions Exercise 5.4
  • Circles Chapter–10
  • Circles Exercise 10.1
  • Circles Exercise 10.2
  • Class 10th math NCERT
  • Class 9th math NCERT
  • Coordinate Geometry chapter–3 class 9
  • Coordinate Geometry Chapter–7
  • Coordinate Geometry exercise 3.1 class-9
  • Coordinate Geometry exercise 3.2 class-9
  • Coordinate Geometry Exercise 7.1
  • Coordinate Geometry Exercise 7.2
  • Introduction to Trigonometry Chapter–8
  • Introduction to Trigonometry Exercise 8.1
  • Introduction to Trigonometry Exercise 8.2
  • Introduction to Trigonometry Exercise 8.3
  • Linear Equations in Two variables chapter–4 class 9
  • Linear Equations in Two variables exercise 4.1 class-9
  • Linear Equations in Two variables exercise 4.2 class-9
  • Number Systems
  • Number systems exercise 1.1
  • Number Systems exercise 1.2
  • Number Systems exercise 1.3
  • Number Systems exercise 1.4
  • Number Systems exercise 1.5
  • Pair of Linear Equations in Two Variables chapter -3
  • Pair of Linear Equations in Two Variables exercise 3.1
  • Pair of Linear Equations in Two Variables Exercise 3.2
  • Pair of Linear Equations in Two Variables Exercise 3.3
  • Polynomials chapter – 2
  • Polynomials chapter–2 class 9
  • Polynomials exercise 2.1
  • Polynomials exercise 2.2
  • Polynomials exercise-2.1 class-9
  • Polynomials exercise-2.2 class-9
  • Polynomials exercise-2.3 class-9
  • Polynomials exercise-2.4 class-9
  • Probability chapter–14
  • Probability Exercise 14.1
  • Quadratic Equations Chapter – 4
  • Quadratic Equations Exercise 4.1
  • Quadratic Equations Exercise 4.2
  • Quadratic Equations Exercise 4.3
  • Real numbers chapter – 1
  • Real numbers exercise 1.1
  • Real numbers exercise 1.2
  • Some Application of Trigonometry Chapter–9
  • Some Applications of Trigonometry Exercise 9.1
  • Statistics chapter–13
  • Statistics Exercise 13.1
  • Statistics Exercise 13.2
  • Statistics Exercise 13.3
  • Surface Areas and Volumes chapter–12
  • Surface Areas and Volumes Exercise 12.1
  • Surface Areas and Volumes Exercise 12.2
  • Theory regarding polynomials of class 9
  • Theory related to Number Systems
  • Theory related to Number Systems exercise 1.3
  • Theory related to Pair of Linear Equations in Two Variables
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  • Triangles Exercise 6.1
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