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

Expert Teacher provides Answers for MCQ CBSE 12 Science Maths Relations and Functions through Video Answers in English 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:**

** Number of binary sets on the set is, **

** Answer Video in** **English****:**

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

**Question 1** : Let * be any binary operation on the set R defined by a * b = a + b – ab, then the binary operation * is, (View Answer Video)

**Question 2** : Letbe defined as f(x) = 3x. (View Answer Video)

**Question 3** : Number of binary operations on the set { a, b} are: (View Answer Video)

**Question 4** : Consider a binary operation * on N defined as . Choose the correct answer. (View Answer Video)

**Question 5** : Let R be the relation on the set N given by R ={(a, b): a = b - 2, b > 6}. Choose the correct answer. (View Answer Video)

**Question 1** : Find the projection of the vector on the vector (View Answer Video)

**Question 2** : P and Q are two points with position vectors and respectively. Write the position vector of a point R which divides the line segment PQ externally in the ratio 2:1. (View Answer Video)

**Question 3** : Write the value of for which the vectors and are parallel vectors. (View Answer Video)

**Question 4** : Find a unit vector in the direction of (View Answer Video)

**Question 5** : if a, b, c are unit vectors such that a + b + c = 0, then find the value of a.b + b.c + c.a. (View Answer Video)

**Question 1** : A plane makes intercepts -6, 3, 4 respectively on the co-ordinte axes. Find the length of the perpendicular from the origin on it. (View Answer Video)

**Question 2** : Find the distance between the planes 2x+3y+4z=10 and 4x+6y+8z=18. (View Answer Video)

**Question 3** : Find the vector equation of the plane which is at a distance of 5 units from the origin and normal to the plane is (View Answer Video)

**Question 4** : What is the distance of the point (p, q, r) from the x-axis ? (View Answer Video)

**Question 5** : Find the distance of the point (-1, -5, -10) from the point of intersection of the line and plane (View Answer Video)

**Question 1** : Evaluate the determinants:. (View Answer Video)

**Question 2** : Evaluate the determinants in :. (View Answer Video)

**Question 3** : The solution of the following system of equation is 2x + 3y = 5, 5x – 2y = 3. (View Answer Video)

**Question 4** : Evaluate the determinants:. (View Answer Video)

**Question 5** : Points (a,a,c),(1,0,1) and (c,c,b) are collinear if: (View Answer Video)