NCERT Solutions for Class 12 Maths Chapter 3 Exercise 3.3 Matrices in * Hindi Medium* as well as

*based on the Latest*

**English Medium****CBSE Curriculum 2018-19**for UP Board and CBSE board Students. Download (

**Exercise 3.3**&

**प्रश्नावली 3.3**) in PDF file format here or go for study online given below.

## NCERT Solutions for Class 12 Maths Chapter 3 Exercise 3.3

### Class 12 Maths Chapter 3 Exercise 3.3 Matrices in English

NCERT Solutions for Class 12 Maths Chapter 3 Exercise 3.3 Matrices in English Medium. Option for download is also given in the first paragraph of this page. Get here all the exercises of **Class 12 Mathematics Chapter 3**, If you need Solutions in Hindi, CLICK HERE for * Hindi Medium* Solutions.

### Class 12 Maths Chapter 3 Exercise 3.3 Matrices in Hindi

NCERT Solutions for Class 12 Maths Chapter 3 Exercise 3.3 Matrices Hindi Medium to study online. To download these in PDF, move to top of this page. These solutions are properly updated for the current academic session 2018-2019 for CBSE as well as UP Board students using NCERT Books. Get here all the exercises of **Class 12 Mathematics Chapter 3**, Go back to * English Medium* Solutions.

Go Back to Top of * English Medium* Solutions &

*Solutions.*

**Hindi Medium**#### Extra Questions on Matrices with Answers

- In a certain city there are 30 colleges. Each college has 15 peons, 6 clerks, 1 typist and 1 section officer. Express the given information as a column matrix. Using scalar multiplication, find the total number of posts of each kind in all the colleges.
- Using determinants, find the equation of line passing through (0, 3) and (1, 1). [Answer: 2x + y = 3]
- If A be any square matrix of order 3 × 3 and |A| = 5, then find the value of |adj(adjA)|. [Answer: 625]
- There are two families A and B. There are 4 men, 6 women and 2 children in family A and 2 men, 2 women and 4 children in family B. The recommended daily allowance for calories is Man: 2400, woman: 1900, child: 1800 and for proteins is Man: 55 gm, woman: 45 gm and child: 33 gm. Represent the above information by matrices. Using matrix multiplication, calculate the total requirement of calories and proteins for each of the two families.
- What is the number of all possible matrices of order 2 × 3 with each entry 0, 1 or 2. [Answer: 729]
- Given a square matrix A of order 2 × 3 such that |A| = 12, find the value of |A.adjA|. [Answer: 1728]