Matrices 12 Science Maths CBSE Solutions for MCQ in English to enable students to get Solutions in a narrative video format for the specific question.

Expert Teacher provides Matrices 12 Science Maths CBSE Solutions for MCQ through Video Solutions 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 Matrices not only to explain the proper method of answering question, but deriving right answer too.

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

** Question:**

** Matrices A and B will be inverse of each other only if : **

** Solution Video in** **English****:**

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

**Question 1** : If, find the value of y. (View Answer Video)

**Question 2** : Find the value of c from the equation: . (View Answer Video)

**Question 3** : Find the value of X, if and . (View Answer Video)

**Question 4** : Compute: . (View Answer Video)

**Question 5** : Given, , find the value of y. (View Answer Video)

**Question 1** : Let be defined as f(x) = 3x. Choose the correct answer. (View Answer Video)

**Question 2** : If and are onto, then is: (View Answer Video)

**Question 3** : Number of binary sets on the set is, (View Answer Video)

**Question 4** : A function is bijective if and only if, (View Answer Video)

**Question 5** : Let R be the relation in the set N given by :

R = {(a, b) : a = b - 2, b > 6}.

Choose the correct answer : (View Answer Video)

**Question 1** : A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20, 16, 18, 20, 17, 16, 19 and 20 years. One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded. What is the probability of the random variable X? Find the mean. (View Answer Video)

**Question 2** : If the mean and variance of a Binomial distribution are 9 and 6 respectively, find the number of trails. (View Answer Video)

**Question 3** : In a school, there are 1,000 students, out of which 380 are girls. Out of 380 girls, 10% of the girls scored highest in GS. What is the probability that a student chosen randomly scored highest in GS given that the chosen student is a girl? (View Answer Video)

**Question 4** : A bag X contains 4 white balls and 2 black balls, while another bag Y contains 3 white balls and 3 black balls. Two balls are drawn (without replacement) at random from one of the bags and were found to be one white and one black. Find the probability that the balls were drawn from bag Y. (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** : Write the value of the following:

(View Answer Video)

**Question 2** : is equal to : (View Answer Video)

**Question 3** : Solve for

(View Answer Video)

**Question 4** : Then x is equal to : (View Answer Video)

**Question 5** : If , then write the value of. (View Answer Video)