MCQ Answers for CBSE 12 Science Maths Linear Programming in English 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 Linear Programming 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 Linear Programming 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 objective function is maximum or minimum, which lies on the boundary of the feasible region. **

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

**Question 1** : The objective function is maximum or minimum, which lies on the boundary of the feasible region. (View Answer Video)

**Question 1** : Find the value of k, if the area of the triangle is 4 sq unit and vertices are (k, 0) (4, 0) (0, 2). (View Answer Video)

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

**Question 3** : If A is an invertible matrix of order 2, then is equal to, (View Answer Video)

**Question 4** : Let A be the non- singular square matrix of order , then |adj A| is equal to, (View Answer Video)

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

**Question 1** : Find the mean, the variance and the standard deviation of the number of doublets in three throws of a pair of dice. (View Answer Video)

**Question 2** : If P(A)=, P(B)= and =, find . (View Answer Video)

**Question 3** : A box contains 50 bolts and 50 nuts. Half of the bolts and nuts are rusted. If two items are drawn with replacement, what is the probability that either both are rusted or both are bolts. (View Answer Video)

**Question 4** : In a group of 30 scientists workings on an experiment, 20 never commit error in their work and are reporting results elaborately. Two scientists are selected at random from the group. Find the probability distribution of the number of selected scientists who never commit error in work and reporting. Also find the mean of the distribution. What values are described in this question? (View Answer Video)

**Question 5** : One card is drawn from a pack of 52 cards. Find the probability of getting a red card:

(View Answer Video)

**Question 1** : Find if the vectors and are coplanar. (View Answer Video)

**Question 2** : Find the vector quantities :

(i) Work (ii) Force

(iii) Velocity (iv) Displacement. (View Answer Video)

**Question 3** : 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 4** : Find the sum of the vectors : (View Answer Video)

**Question 5** : Find the sum of the vectors and (View Answer Video)