# NCERT Solutions Class 11 Maths Chapter 8 Binomial Theorem

NCERT solutions for class 11 maths chapter 8 binomial theorem deals with the application of the binomial theorem to evaluate the numerical values of numbers that are raised to a very large exponent. Up until this lesson, kids were familiar with finding the squares and cubes of numbers using algebraic identities. However, for higher powers, the calculations become difficult by using repeated multiplication hence, we use the binomial theorem to overcome this issue. It gives an easier way to expand a number in the standard form of (a + b)^{ n}, where n is an integer or a rational number. NCERT solutions class 11 maths chapter 8 are based on the fact that as we increase the index of an expansion the value of the terms follows a certain kind of pattern. For example, the total number of terms in an expansion is one more than the index, i.e, (a + b)^{ 2} has an index of 2 but 3 terms in the expansion. Facts like these contributed to the discovery of the binomial theorem.

The class 11 maths NCERT solutions chapter 8 also introduces kids to the concept of Pascal’s triangle given by the French mathematician Blaise Pascal. The expansions for the higher powers of a binomial are also possible by using Pascal’s triangle. This topic is seen in many other sister chapters and is extremely useful as it helps to simplify very lengthy calculations. NCERT solutions Chapter 8 Binomial Theorem is a pretty simple lesson if kids are able to understand and memorize the formula for this theorem. In this article, we will take a complete look at all the aspects associated with the Binomial Theorem and also download the exercise-wise solutions provided in the links below.

- NCERT Solutions Class 11 Maths Chapter 8 Ex 8.1
- NCERT Solutions Class 11 Maths Chapter 8 Ex 8.2
- NCERT Solutions Class 11 Maths Chapter 8 Miscellaneous Exercise

## NCERT Solutions for Class 11 Maths Chapter 8 PDF

Ancient Indian mathematicians knew about the coefficients in the expansions of (x + y)^{ n} , 0 ≤ n ≤ 7. The arrangement of these coefficients was in the form of a diagram called Meru-Prastara, provided by Pingla in his book Chhanda shastra (200B.C.). There are several other interesting points as well as study tricks outlined in the NCERT solutions class 11 maths that help kids combat monotony, increase their general knowledge and improve their mathematical acumen. The links to these solutions are given below.

**ā** Download Class 11 Maths NCERT Solutions Chapter 8 Binomial Theorem

**NCERT Class 11 Maths Chapter 8 **

### NCERT Solutions for Class 11 Maths Chapter 8 Binomial Theorem

The NCERT Solutions Class 11 Maths Chapter 8 binomial theorem is heavy on the calculations side. Thus, kids must revise this lesson constantly so as to improve their speed and accuracy in performing such computations. Additionally, students must also have knowledge about combinations in order to understand the derivation of this theorem. Given below is a detailed analysis of all the exercise-wise solutions:

- Class 11 Maths Chapter 8 Ex 8.1 - 14 Questions
- Class 11 Maths Chapter 8 Ex 8.2 - 12 Questions
- Class 11 Maths Chapter 8 Miscellaneous Ex - 10 Questions

ā Download Class 11 Maths Chapter 8 NCERT Book

**Topics Covered:** The topics under class 11 maths NCERT solutions chapter 8 are using the binomial theorem to expand expressions and finding the general term as well as the middle term in an exponential expression.

**Total Questions:** Class 11 maths chapter 8 Binomial Theorem consists of a total of 36 questions which have been divided into 14 straightforward formula-based sums, 6 intermediate, and 16 challenging problems.

## List of Formulas in NCERT Solutions Class 11 Maths Chapter 8

NCERT solutions class 11 maths chapter 8 is based on the binomial theorem which is essentially a formula. This formula has been proven with the help of mathematical induction. Additionally, in this lesson, the binomial theorem has been applied to only positive integer indices. Kids need to be well-versed with this formula in order to solve the questions effectively. Using the binomial theorem students can also pinpoint any term in a binomial expansion. The formulas used in the NCERT solutions for class 11 maths chapter 8 are given below:

- Binomial Theorem: (a + b)
^{ n}=^{n}C_{0}a^{ n}+^{n}C_{1}a^{ n – 1}b +^{n}C_{2}a^{ n – 2}b^{ 2}+ ...+^{n}C^{n – 1}b^{ n – 1}+^{n}C_{n}b^{ n} - If n is even in (a + b)
^{ n}, then the middle term is given by (n/2 + 1)^{th} - If n is even in (a + b)
^{ n}, then the middle terms are given by [(n+1)/2]^{th}and [(n+1)/2 + 1]^{th}terms

## FAQs on NCERT Solutions Class 11 Maths Chapter 8

### Why are NCERT Solutions Class 11 Maths Chapter 8 Important?

NCERT Solutions Class 11 Maths Chapter 8 helps in giving kids a deep-seated understanding of the topic as it provides explanations to each step of the problems. Additionally, it also helps students present their examination papers in a clear and structured manner. Thus, these solutions are a vital resource for studying.

## Do I Need to Practice all Questions Provided in Class 11 Maths NCERT Solutions Binomial Theorem?

It is advisable to practice all sums provided in NCERT Solutions Class 11 Maths Binomial Theorem as these are arranged in different formats. Each problem is designed to give students an in-depth knowledge of some aspect related to the topic. By revising all questions kids can build their confidence and attempt any type of problem that might appear on an examination.

### What are the Important Topics Covered in NCERT Solutions Class 11 Maths Chapter 8?

The NCERT Solutions Class 11 Maths Chapter 8 covers two major topics namely - expansion of expressions using binomial theorem and pinpointing a term within an exponential expression. Both topics are very important and come with vital formulas. Thus, kids need to allot an equal amount of time in studying them thoroughly.

### How Many Questions are there in NCERT Solutions Class 11 Maths Chapter 8 Binomial Theorem?

There are 36 sums in the NCERT Solutions Class 11 Maths Chapter 8 Binomial Theorem that are spread out among 3 exercises. Out of these, the miscellaneous exercise consists of high-order thinking problems that require kids to employ their critical thinking skills. These sums have been curated by experts in the field of mathematics and are very important from an examination point of view.

### What are the Important Formulas in NCERT Solutions Class 11 Maths Chapter 8?

The important formulas in the NCERT Solutions Class 11 Maths Chapter 8 are the binomial theorem, finding the general term of an expansion as well as finding the middle terms. There are several levels of questions available in the NCERT textbook that enable kids to develop a strong foundation of these topics.

### How CBSE Students can utilize NCERT Solutions Class 11 Maths Chapter 8 effectively?

Students first need to have a good understanding of combinations as well as mathematical induction to learn how the binomial theorem originated. The next step is to memorize the binomial formula and apply them to a wide range of sums outlined in the NCERT textbook. Finally, kids should consult the NCERT Solutions Class 11 Maths Chapter 8 to cross-check their answers as well as develop a good understanding of this topic.

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