MCQ Answers for CBSE 12 Science Maths Relations and Functions in Hindi to enable students to get Answers in a narrative video format for the specific question.

Expert Teacher provides MCQ Answers for CBSE 12 Science Maths Relations and Functions through Video Answers in Hindi language. This video solution will be useful for students to understand how to write an answer in exam in order to score more marks. This teacher uses a narrative style for a question from Relations and Functions not only to explain the proper method of answering question, but deriving right answer too.

Please find the question below and view the Answer in a narrative video format.

** Question:**

** The law a + b = b + a is called ______. **

** Answer Video in** **Hindi****:**

You can select video Answers from other languages also. Please check Answers in ( English )

**Question 1** : Let * be the binary operation on N given by a * b = LCM of a and b. Find the identity of * in N. (View Answer Video)

**Question 2** : Let * be the binary operation on N given by a * b = LCM of a and b. Find 5 * 7. (View Answer Video)

**Question 3** : Functions are defined respectively, by , find . (View Answer Video)

**Question 4** : * is a binary operation on Z such that: a * b = a + b + ab. The solution of (3* 4) *x = – 1 is,

(View Answer Video)

**Question 5** : Functions are defined respectively, by , find . (View Answer Video)

**Question 1** : Find the value of y, if . (View Answer Video)

**Question 2** : Find the inverse of the matrix, . (View Answer Video)

**Question 3** : Compute: . (View Answer Video)

**Question 4** : If, find the value of y. (View Answer Video)

**Question 5** : Find the value of Y, if and . (View Answer Video)

**Question 1** : Let A be square matrix of order 3 * 3, then |kA|is equal to (View Answer Video)

**Question 2** : Which of the following is correct? (View Answer Video)

**Question 3** : Using the properties of determinants, evaluate . (View Answer Video)

**Question 4** : Find the adjoint of the matrix . (View Answer Video)

**Question 5** : Evaluate the determinant: . (View Answer Video)